Company lists · Data refreshed September 2026
Top 25 O-1 visa law firms worldwide
RevenueBase identified 3,741 company matches for o-1 visa law firms worldwide as of September 2026 and tracks 23,534 professional contacts across them, including 8,244 with verified work emails. The United States is the largest market and New York the largest hub.
This list covers company matches for o-1 visa law firms worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 29, 2026. Country and city lists for o-1 visa law firms follow the table.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest o-1 visa law firms worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 814 contacts → | ||||
Exact match “We are one of the nation’s most experienced law firms dedicated to delivering strategic immigration solutions-especially in complex and high-stakes cases-so our clients can move…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 2 | 658 contacts → | ||||
Exact match “Alonso & Alonso is a distinguished immigration law firm with a rich history of providing expert legal services in navigating the complexities of the U.S.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 3 | 377 contacts → | ||||
Exact match “At Colombo & Hurd, we help professionals, founders, and investors build their future in the United States.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 4 | 235 contacts → | ||||
Exact match “Ellis Porter is a law firm focused on managing the immigration experience for employers and individuals.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 5 | 232 contacts → | ||||
Exact match “Eastern Washington law firm devoted to helping and protecting immigrants.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 6 | 214 contacts → | ||||
Exact match “At GovAssist, we are your foremost authority on end-to-end visa applications, consultancy, and immigration law, for personal or professional travel purposes.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 7 | 182 contacts → | ||||
Exact match “Manuel Solis Law Firm focuses on helping immigrants become U.S.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 8 | 139 contacts → | ||||
Exact match “Foster is a leading global immigration law firm dedicated to helping employers and individuals obtain nonimmigrant and immigrant work visas and permanent resident options…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 9 | 127 contacts → | ||||
Exact match “At Murray Osorio PLLC, our mission as a national full-service immigration law firm is to provide superior legal services across the breadth of immigration law throughout the…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 10 | 126 contacts → | ||||
Exact match “At Immigration Advice Service, we are more than just immigration solicitors; we are your dedicated partners in navigating the intricate world of immigration law.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 11 | 121 contacts → | ||||
Exact match “Klasko Immigration Law Partners, LLP is nationally renowned for providing creative solutions to many of the most complex issues in immigration law to multinational corporations…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 12 | 99 contacts → | ||||
Exact match “Fakhoury Global Immigration (FGI) specializes in U.S.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 13 | 96 contacts → | ||||
Exact match “At James Immigration Law, we are committed to providing honest and knowledgeable legal advice on all matters concerning or connected to immigration in the United States.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 14 | 88 contacts → | ||||
Exact match “Manifest Law is a modern immigration law firm with handpicked attorneys powered by cutting-edge software.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 15 | 84 contacts → | ||||
Exact match “Welcome to Oguz Law!” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 16 | 80 contacts → | ||||
Exact match “Immigration Law Firm.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 17 | 78 contacts → | ||||
Exact match “Law firm focused on Immigration matters.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 18 | 75 contacts → | ||||
Exact match “Our mission Is to help 1 million life’s live free -“Vive Libre”.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 19 | 72 contacts → | ||||
Exact match “Consumer Law Group, LLC is a national immigration law firm focused exclusively on U.S.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 20 | 71 contacts → | ||||
Exact match “Attorneys Youman, Madeo & Fasano, LLP, is a firm of bright immigration law attorneys who have distinguished themselves for dynamic knowledge of U.S.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 21 | 69 contacts → | ||||
Exact match “Rivas Associates is an immigration law firm dedicated to individuals and families navigating one of the most complex legal systems in the country - with the personal attention…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 22 | 68 contacts → | ||||
Exact match “Founded in 1994, the Murthy Law Firm practices U.S.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 23 | 66 contacts → | ||||
Exact match “Una firma de abogados dedicada a obtener un estatus migratorio a los nuevos americanos dentro de los Estados Unidos (TÚ).” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 24 | 65 contacts → | ||||
Exact match “Wilner & O'Reilly, APLC was formed in 2003, bringing together two top-rated attorneys recognized for their knowledge and ability in the field of immigration law to create one of…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 25 | 65 contacts → | ||||
Exact match “We provide tailored, compassionate, and professional immigration legal services to individuals and families.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “o-1 visa law firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 3,741 o-1 visa law firms worldwide
See the full list, filter by size, metro and specialty, and access 8,244 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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O-1 visa law firms worldwide at a glance
As of Sep 29, 2026Companies by employee count
Email recency is reported on each country list linked below.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- Coverage
- Every country. Country and city lists for o-1 visa law firms are linked below.
- What qualifies
- Company records worldwide whose business descriptions match “o-1 visa law firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every displayed company carries at least one verified work email. RevenueBase tracks 8,244 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 29, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
O-1 visa law firms by location
23 lists · largest firstEvery O-1 visa law firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- O-1 visa law firms based in the United States2,621
- O-1 visa law firms based in Canada179
- O-1 visa law firms based in the United Kingdom132
- O-1 visa law firms based in Australia51
Cities
- O-1 visa law firms based in New York, United States227
- O-1 visa law firms based in Houston, United States87
- O-1 visa law firms based in Los Angeles, United States87
- O-1 visa law firms based in Miami, United States83
- O-1 visa law firms based in Chicago, United States69
- O-1 visa law firms based in London, United Kingdom62
- O-1 visa law firms based in Orlando, United States52
- O-1 visa law firms based in Washington, United States49
- O-1 visa law firms based in San Francisco, United States48
- O-1 visa law firms based in Atlanta, United States41
- O-1 visa law firms based in San Diego, United States41
- O-1 visa law firms based in Boston, United States40
- O-1 visa law firms based in Toronto, Canada40
- O-1 visa law firms based in Dallas, United States38
- O-1 visa law firms based in San Jose, United States31
- O-1 visa law firms based in San Antonio, United States30
- O-1 visa law firms based in Seattle, United States28
- O-1 visa law firms based in Austin, United States26
- O-1 visa law firms based in Philadelphia, United States26
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “o-1 visa law firms”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many o-1 visa law firms are there worldwide?
RevenueBase identified 3,741 company matches for o-1 visa law firms worldwide as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
Lisinski LAW Firm tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which country has the most o-1 visa law firms?
The United States leads with 2,621 companies, followed by Canada (179) and the United Kingdom (132). Every o-1 visa law firms list by country and city is linked on this page.
Which city has the most o-1 visa law firms?
New York leads with 227 company records, followed by Houston (87) and Los Angeles (87).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 8,244 professional contacts with verified work emails tracked across these 3,741 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 29, 2026.
Ready to reach these companies? Verified emails and direct dials for all 3,741 o-1 visa law firms worldwide. Start with a free account, no credit card.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
More company lists
Company intelligence · public preview
Top 25 o-1 visa law firms worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 3,741 matching company records for o-1 visa law firms worldwide, with 23,534 tracked contacts and 8,244 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 29, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 o-1 visa law firms worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Lisinski LAW Firmlisinskifirm.comHQ: Dublin, OH, United StatesReported employees: 1,001-5,000 | Dublin, OH, United States | 1,001-5,000 | Exact match | 814 contacts → |
“We are one of the nation’s most experienced law firms dedicated to delivering strategic immigration solutions-especially in complex and high-stakes cases-so our clients can move…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Alonso & Alonso Attorneys At Law, Pllcalonsoandalonsolaw.comHQ: San Antonio, TX, United StatesReported employees: 201-500 | San Antonio, TX, United States | 201-500 | Exact match | 658 contacts → |
“Alonso & Alonso is a distinguished immigration law firm with a rich history of providing expert legal services in navigating the complexities of the U.S.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Colombo & Hurdcolombohurdlaw.comHQ: Orlando, FL, United StatesReported employees: 201-500 | Orlando, FL, United States | 201-500 | Exact match | 377 contacts → |
“At Colombo & Hurd, we help professionals, founders, and investors build their future in the United States.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Ellis Porterellisporter.comHQ: Troy, MI, United StatesReported employees: 201-500 | Troy, MI, United States | 201-500 | Exact match | 235 contacts → |
“Ellis Porter is a law firm focused on managing the immigration experience for employers and individuals.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Quiroga LAW Office, Pllcquirogalawoffice.comHQ: Spokane Valley, WA, United StatesReported employees: Not recorded | Spokane Valley, WA, United States | Not recorded | Exact match | 232 contacts → |
“Eastern Washington law firm devoted to helping and protecting immigrants.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Govassistgovassist.comHQ: Washington, DC, United StatesReported employees: 201-500 | Washington, DC, United States | 201-500 | Exact match | 214 contacts → |
“At GovAssist, we are your foremost authority on end-to-end visa applications, consultancy, and immigration law, for personal or professional travel purposes.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  LAW Offices Of Manuel Solismanuelsolislawfirm.comHQ: Houston, TX, United StatesReported employees: Not recorded | Houston, TX, United States | Not recorded | Exact match | 182 contacts → |
“Manuel Solis Law Firm focuses on helping immigrants become U.S.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Foster LLPfosterglobal.comHQ: Houston, TX, United StatesReported employees: 51-200 | Houston, TX, United States | 51-200 | Exact match | 139 contacts → |
“Foster is a leading global immigration law firm dedicated to helping employers and individuals obtain nonimmigrant and immigrant work visas and permanent resident options…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Murray Osorio Pllcmurrayosorio.comHQ: Fairfax, VA, United StatesReported employees: 51-200 | Fairfax, VA, United States | 51-200 | Exact match | 127 contacts → |
“At Murray Osorio PLLC, our mission as a national full-service immigration law firm is to provide superior legal services across the breadth of immigration law throughout the…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Immigration Advice Serviceiasservices.org.ukHQ: Oldham, United KingdomReported employees: 51-200 | Oldham, United Kingdom | 51-200 | Exact match | 126 contacts → |
“At Immigration Advice Service, we are more than just immigration solicitors; we are your dedicated partners in navigating the intricate world of immigration law.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Klasko Immigration LAW Partners, LLPklaskolaw.comHQ: Philadelphia, PA, United StatesReported employees: 51-200 | Philadelphia, PA, United States | 51-200 | Exact match | 121 contacts → |
“Klasko Immigration Law Partners, LLP is nationally renowned for providing creative solutions to many of the most complex issues in immigration law to multinational corporations…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Fakhoury Global Immigrationfakhouryglobal.comHQ: Troy, MI, United StatesReported employees: 51-200 | Troy, MI, United States | 51-200 | Exact match | 99 contacts → |
“Fakhoury Global Immigration (FGI) specializes in U.S.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  James Immigration Law, P.Ajamesimmigrationlaw.comHQ: Vero Beach, FL, United StatesReported employees: 51-200 | Vero Beach, FL, United States | 51-200 | Exact match | 96 contacts → |
“At James Immigration Law, we are committed to providing honest and knowledgeable legal advice on all matters concerning or connected to immigration in the United States.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Manifest LAWmanifestlaw.comHQ: New York, NY, United StatesReported employees: 11-50 | New York, NY, United States | 11-50 | Exact match | 88 contacts → |
“Manifest Law is a modern immigration law firm with handpicked attorneys powered by cutting-edge software.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Oguz LAWoguz.lawHQ: Walnut Creek, CA, United StatesReported employees: 51-200 | Walnut Creek, CA, United States | 51-200 | Exact match | 84 contacts → |
“Welcome to Oguz Law!” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Jaime Barron, P.C. Immigration LAW Groupjaimebarron.comHQ: Dallas, TX, United StatesReported employees: 51-200 | Dallas, TX, United States | 51-200 | Exact match | 80 contacts → |
“Immigration Law Firm.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Elizabeth Rosario Law, PLCelizabethrosariolaw.comHQ: Wyoming, MI, United StatesReported employees: 51-200 | Wyoming, MI, United States | 51-200 | Exact match | 78 contacts → |
“Law firm focused on Immigration matters.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  NEW Frontier Immigration LAWlinkin.bioHQ: Phoenix, AZ, United StatesReported employees: 51-200 | Phoenix, AZ, United States | 51-200 | Exact match | 75 contacts → |
“Our mission Is to help 1 million life’s live free -“Vive Libre”.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Consumer LAW Group LLCconsumerlaw.comHQ: Chicago, IL, United StatesReported employees: 51-200 | Chicago, IL, United States | 51-200 | Exact match | 72 contacts → |
“Consumer Law Group, LLC is a national immigration law firm focused exclusively on U.S.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Youman, Madeo & Fasano LLPymflaw.comHQ: Queens, NY, United StatesReported employees: 51-200 | Queens, NY, United States | 51-200 | Exact match | 71 contacts → |
“Attorneys Youman, Madeo & Fasano, LLP, is a firm of bright immigration law attorneys who have distinguished themselves for dynamic knowledge of U.S.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Rivas & Associates Pllcrivasassociates.comHQ: Tulsa, OK, United StatesReported employees: 51-200 | Tulsa, OK, United States | 51-200 | Exact match | 69 contacts → |
“Rivas Associates is an immigration law firm dedicated to individuals and families navigating one of the most complex legal systems in the country - with the personal attention…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Murthy LAW Firm U.S. Immigrationmurthy.com HQ: Owings Mills, MD, United StatesReported employees: 51-200 | Owings Mills, MD, United States | 51-200 | Exact match | 68 contacts → |
“Founded in 1994, the Murthy Law Firm practices U.S.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Mangone LAW Firm, LLCmangonelawfirmllc.com HQ: Morris Plains, NJ, United StatesReported employees: 51-200 | Morris Plains, NJ, United States | 51-200 | Exact match | 66 contacts → |
“Una firma de abogados dedicada a obtener un estatus migratorio a los nuevos americanos dentro de los Estados Unidos (TÚ).” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Wilner & O'reilly Immigration Lawyerswilneroreilly.comHQ: Costa Mesa, CA, United StatesReported employees: 51-200 | Costa Mesa, CA, United States | 51-200 | Exact match | 65 contacts → |
“Wilner & O'Reilly, APLC was formed in 2003, bringing together two top-rated attorneys recognized for their knowledge and ability in the field of immigration law to create one of…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Saenz-Garcia Law, Pllcsaenzfirm.comHQ: Irving, TX, United StatesReported employees: 51-200 | Irving, TX, United States | 51-200 | Exact match | 65 contacts → |
“We provide tailored, compassionate, and professional immigration legal services to individuals and families.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 3,741 company matches
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O-1 visa law firms: dataset insights
September 29, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
3,726 records in the displayed employee bands.
15 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 3,741 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 29, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
O-1 visa law firms by location
23 lists · largest firstEvery O-1 visa law firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- O-1 visa law firms based in the United States2,621
- O-1 visa law firms based in Canada179
- O-1 visa law firms based in the United Kingdom132
- O-1 visa law firms based in Australia51
Cities
- O-1 visa law firms based in New York, United States227
- O-1 visa law firms based in Houston, United States87
- O-1 visa law firms based in Los Angeles, United States87
- O-1 visa law firms based in Miami, United States83
- O-1 visa law firms based in Chicago, United States69
- O-1 visa law firms based in London, United Kingdom62
- O-1 visa law firms based in Orlando, United States52
- O-1 visa law firms based in Washington, United States49
- O-1 visa law firms based in San Francisco, United States48
- O-1 visa law firms based in Atlanta, United States41
- O-1 visa law firms based in San Diego, United States41
- O-1 visa law firms based in Boston, United States40
- O-1 visa law firms based in Toronto, Canada40
- O-1 visa law firms based in Dallas, United States38
- O-1 visa law firms based in San Jose, United States31
- O-1 visa law firms based in San Antonio, United States30
- O-1 visa law firms based in Seattle, United States28
- O-1 visa law firms based in Austin, United States26
- O-1 visa law firms based in Philadelphia, United States26
Questions about this company list
What does Exact match mean for o-1 visa law firms?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many o-1 visa law firms did RevenueBase find worldwide?
The saved snapshot records 3,741 matching company records, 23,534 tracked contacts and 8,244 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 29, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
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Cite this list
RevenueBase Data Team. Top 25 o-1 visa law firms worldwide. Snapshot: September 29, 2026. https://revenuebase.ai/companies/browse/o-1-visa-law-firms.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
Company intelligence · public preview
Top 25 o-1 visa law firms worldwide
RevenueBase records 3,741 matching company records for o-1 visa law firms worldwide, with 23,534 tracked contacts and 8,244 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 29, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 o-1 visa law firms worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Lisinski LAW Firmlisinskifirm.com HQ: Dublin, OH, United StatesReported employees: 1,001-5,000 | Dublin, OH, United States | 1,001-5,000 | Exact match | 814 contacts → |
“We are one of the nation’s most experienced law firms dedicated to delivering strategic immigration solutions-especially in complex and high-stakes cases-so our clients can move…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Alonso & Alonso Attorneys At Law, Pllcalonsoandalonsolaw.com HQ: San Antonio, TX, United StatesReported employees: 201-500 | San Antonio, TX, United States | 201-500 | Exact match | 658 contacts → |
“Alonso & Alonso is a distinguished immigration law firm with a rich history of providing expert legal services in navigating the complexities of the U.S.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Colombo & Hurdcolombohurdlaw.com HQ: Orlando, FL, United StatesReported employees: 201-500 | Orlando, FL, United States | 201-500 | Exact match | 377 contacts → |
“At Colombo & Hurd, we help professionals, founders, and investors build their future in the United States.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Ellis Porterellisporter.com HQ: Troy, MI, United StatesReported employees: 201-500 | Troy, MI, United States | 201-500 | Exact match | 235 contacts → |
“Ellis Porter is a law firm focused on managing the immigration experience for employers and individuals.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Quiroga LAW Office, Pllcquirogalawoffice.com HQ: Spokane Valley, WA, United StatesReported employees: Not recorded | Spokane Valley, WA, United States | Not recorded | Exact match | 232 contacts → |
“Eastern Washington law firm devoted to helping and protecting immigrants.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Govassistgovassist.com HQ: Washington, DC, United StatesReported employees: 201-500 | Washington, DC, United States | 201-500 | Exact match | 214 contacts → |
“At GovAssist, we are your foremost authority on end-to-end visa applications, consultancy, and immigration law, for personal or professional travel purposes.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | LAW Offices Of Manuel Solismanuelsolislawfirm.com HQ: Houston, TX, United StatesReported employees: Not recorded | Houston, TX, United States | Not recorded | Exact match | 182 contacts → |
“Manuel Solis Law Firm focuses on helping immigrants become U.S.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Foster LLPfosterglobal.com HQ: Houston, TX, United StatesReported employees: 51-200 | Houston, TX, United States | 51-200 | Exact match | 139 contacts → |
“Foster is a leading global immigration law firm dedicated to helping employers and individuals obtain nonimmigrant and immigrant work visas and permanent resident options…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Murray Osorio Pllcmurrayosorio.com HQ: Fairfax, VA, United StatesReported employees: 51-200 | Fairfax, VA, United States | 51-200 | Exact match | 127 contacts → |
“At Murray Osorio PLLC, our mission as a national full-service immigration law firm is to provide superior legal services across the breadth of immigration law throughout the…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Immigration Advice Serviceiasservices.org.uk HQ: Oldham, United KingdomReported employees: 51-200 | Oldham, United Kingdom | 51-200 | Exact match | 126 contacts → |
“At Immigration Advice Service, we are more than just immigration solicitors; we are your dedicated partners in navigating the intricate world of immigration law.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Klasko Immigration LAW Partners, LLPklaskolaw.com HQ: Philadelphia, PA, United StatesReported employees: 51-200 | Philadelphia, PA, United States | 51-200 | Exact match | 121 contacts → |
“Klasko Immigration Law Partners, LLP is nationally renowned for providing creative solutions to many of the most complex issues in immigration law to multinational corporations…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Fakhoury Global Immigrationfakhouryglobal.com HQ: Troy, MI, United StatesReported employees: 51-200 | Troy, MI, United States | 51-200 | Exact match | 99 contacts → |
“Fakhoury Global Immigration (FGI) specializes in U.S.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | James Immigration Law, P.Ajamesimmigrationlaw.com HQ: Vero Beach, FL, United StatesReported employees: 51-200 | Vero Beach, FL, United States | 51-200 | Exact match | 96 contacts → |
“At James Immigration Law, we are committed to providing honest and knowledgeable legal advice on all matters concerning or connected to immigration in the United States.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Manifest LAWmanifestlaw.com HQ: New York, NY, United StatesReported employees: 11-50 | New York, NY, United States | 11-50 | Exact match | 88 contacts → |
“Manifest Law is a modern immigration law firm with handpicked attorneys powered by cutting-edge software.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Oguz LAWoguz.law HQ: Walnut Creek, CA, United StatesReported employees: 51-200 | Walnut Creek, CA, United States | 51-200 | Exact match | 84 contacts → |
“Welcome to Oguz Law!” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Jaime Barron, P.C. Immigration LAW Groupjaimebarron.com HQ: Dallas, TX, United StatesReported employees: 51-200 | Dallas, TX, United States | 51-200 | Exact match | 80 contacts → |
“Immigration Law Firm.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Elizabeth Rosario Law, PLCelizabethrosariolaw.com HQ: Wyoming, MI, United StatesReported employees: 51-200 | Wyoming, MI, United States | 51-200 | Exact match | 78 contacts → |
“Law firm focused on Immigration matters.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | NEW Frontier Immigration LAWlinkin.bio HQ: Phoenix, AZ, United StatesReported employees: 51-200 | Phoenix, AZ, United States | 51-200 | Exact match | 75 contacts → |
“Our mission Is to help 1 million life’s live free -“Vive Libre”.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Consumer LAW Group LLCconsumerlaw.com HQ: Chicago, IL, United StatesReported employees: 51-200 | Chicago, IL, United States | 51-200 | Exact match | 72 contacts → |
“Consumer Law Group, LLC is a national immigration law firm focused exclusively on U.S.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Youman, Madeo & Fasano LLPymflaw.com HQ: Queens, NY, United StatesReported employees: 51-200 | Queens, NY, United States | 51-200 | Exact match | 71 contacts → |
“Attorneys Youman, Madeo & Fasano, LLP, is a firm of bright immigration law attorneys who have distinguished themselves for dynamic knowledge of U.S.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Rivas & Associates Pllcrivasassociates.com HQ: Tulsa, OK, United StatesReported employees: 51-200 | Tulsa, OK, United States | 51-200 | Exact match | 69 contacts → |
“Rivas Associates is an immigration law firm dedicated to individuals and families navigating one of the most complex legal systems in the country - with the personal attention…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Murthy LAW Firm U.S. Immigrationmurthy.com HQ: Owings Mills, MD, United StatesReported employees: 51-200 | Owings Mills, MD, United States | 51-200 | Exact match | 68 contacts → |
“Founded in 1994, the Murthy Law Firm practices U.S.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Mangone LAW Firm, LLCmangonelawfirmllc.com HQ: Morris Plains, NJ, United StatesReported employees: 51-200 | Morris Plains, NJ, United States | 51-200 | Exact match | 66 contacts → |
“Una firma de abogados dedicada a obtener un estatus migratorio a los nuevos americanos dentro de los Estados Unidos (TÚ).” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Wilner & O'reilly Immigration Lawyerswilneroreilly.com HQ: Costa Mesa, CA, United StatesReported employees: 51-200 | Costa Mesa, CA, United States | 51-200 | Exact match | 65 contacts → |
“Wilner & O'Reilly, APLC was formed in 2003, bringing together two top-rated attorneys recognized for their knowledge and ability in the field of immigration law to create one of…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Saenz-Garcia Law, Pllcsaenzfirm.com HQ: Irving, TX, United StatesReported employees: 51-200 | Irving, TX, United States | 51-200 | Exact match | 65 contacts → |
“We provide tailored, compassionate, and professional immigration legal services to individuals and families.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 3,741 company matches
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O-1 visa law firms: dataset insights
September 29, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
3,726 records in the displayed employee bands.
15 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 3,741 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 29, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
O-1 visa law firms by location
23 lists · largest firstEvery O-1 visa law firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- O-1 visa law firms based in the United States2,621
- O-1 visa law firms based in Canada179
- O-1 visa law firms based in the United Kingdom132
- O-1 visa law firms based in Australia51
Cities
- O-1 visa law firms based in New York, United States227
- O-1 visa law firms based in Houston, United States87
- O-1 visa law firms based in Los Angeles, United States87
- O-1 visa law firms based in Miami, United States83
- O-1 visa law firms based in Chicago, United States69
- O-1 visa law firms based in London, United Kingdom62
- O-1 visa law firms based in Orlando, United States52
- O-1 visa law firms based in Washington, United States49
- O-1 visa law firms based in San Francisco, United States48
- O-1 visa law firms based in Atlanta, United States41
- O-1 visa law firms based in San Diego, United States41
- O-1 visa law firms based in Boston, United States40
- O-1 visa law firms based in Toronto, Canada40
- O-1 visa law firms based in Dallas, United States38
- O-1 visa law firms based in San Jose, United States31
- O-1 visa law firms based in San Antonio, United States30
- O-1 visa law firms based in Seattle, United States28
- O-1 visa law firms based in Austin, United States26
- O-1 visa law firms based in Philadelphia, United States26
Questions about this company list
What does Exact match mean for o-1 visa law firms?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many o-1 visa law firms did RevenueBase find worldwide?
The saved snapshot records 3,741 matching company records, 23,534 tracked contacts and 8,244 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 29, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
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Cite this list
RevenueBase Data Team. Top 25 o-1 visa law firms worldwide. Snapshot: September 29, 2026. https://revenuebase.ai/companies/browse/o-1-visa-law-firms.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗