Company lists · Data refreshed September 2026

Top 25 Business immigration law firms worldwide

Name: Business immigration law firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 23,854 companies tracked

RevenueBase identified 23,854 business immigration law firms worldwide as of September 2026 and tracks 247,718 professional contacts across them, including 78,024 with verified work emails. The United States is the largest market and London the largest hub.

This list covers business immigration law firms worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 27, 2026. Country and city lists for business immigration law firms follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 27, 2026 86% judged on-target in blind review

23,854Companies

247,718Contacts tracked

78,024Verified emails

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The 25 largest business immigration law firms worldwide

Ranked by team size

Top 25 of 23,854 business immigration law firms worldwide, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to business immigration law firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	LAW Firm	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	n/a	6,284 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 27, 2026
2	Fragomen	Partial evidence	New York, NY, United StatesHQ checked Sep 27, 2026	5,001-10,000	6,245 contacts →
	Partial evidence “Fragomen is the leading global immigration services firm worldwide.” Source: RevenueBase Database · checked Sep 27, 2026
3	Ogletree Deakins	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 27, 2026	1,001-5,000	2,708 contacts →
	Partial evidence “Ogletree Deakins is one of the largest labor and employment law firms representing management in all types of employment-related legal matters.” Source: RevenueBase Database · checked Sep 27, 2026
4	Slaughter And MAY	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	1,001-5,000	1,951 contacts →
	Partial evidence “Slaughter and May is regarded as one of the most prestigious law firms in the world.” Source: RevenueBase Database · checked Sep 27, 2026
5	Mccarthy Tétrault	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 27, 2026	1,001-5,000	1,913 contacts →
	Indirect evidence “McCarthy Tétrault provides a broad range of legal services, advising on large and complex assignments for Canadian and international interests.” Source: RevenueBase Database · checked Sep 27, 2026
6	Tozzinifreire Advogados	Partial evidence	São Paulo, BrazilHQ checked Sep 27, 2026	1,001-5,000	1,580 contacts →
	Partial evidence “TozziniFreire is one of the leading legal services organizations in Latin America, operating in all areas of Business Law and with a significant track record in serving national…” Source: RevenueBase Database · checked Sep 27, 2026
7	Osler, Hoskin & Harcourt LLP	Partial evidence	Toronto, ON, CanadaHQ checked Sep 27, 2026	1,001-5,000	1,544 contacts →
	Partial evidence “Osler is a leading business law firm uniquely positioned to advise Canadian, U.S.” Source: RevenueBase Database · checked Sep 27, 2026
8	Miller Thomson LLP	Partial evidence	Toronto, ON, CanadaHQ checked Sep 27, 2026	1,001-5,000	1,423 contacts →
	Partial evidence “Miller Thomson LLP ("Miller Thomson") is a national business law firm with approximately 500 lawyers across five provinces in Canada, the broadest reach of any Canadian law firm.” Source: RevenueBase Database · checked Sep 27, 2026
9	Pinheiro Neto Advogados	Indirect evidence	São Paulo, BrazilHQ checked Sep 27, 2026	1,001-5,000	1,250 contacts →
	Indirect evidence “Pinheiro Neto Advogados é um escritório brasileiro com sólida experiência em mais de 40 áreas do Direito Empresarial.” Source: RevenueBase Database · checked Sep 27, 2026
10	Urbano Vitalino Advogados	Indirect evidence	Sao Paulo, BrazilHQ checked Sep 27, 2026	1,001-5,000	1,242 contacts →
	Indirect evidence “Com 88 anos de experiência, o Urbano Vitalino Advogados tem como marca sua vasta tradição jurídica.” Source: RevenueBase Database · checked Sep 27, 2026
11	BAL	Strong evidence	Richardson, TX, United StatesHQ checked Sep 27, 2026	1,001-5,000	1,130 contacts →
	Strong evidence “BAL is a corporate immigration law firm that powers human achievement through immigration expertise, people-centered client services and innovative technology.” Source: RevenueBase Database · checked Sep 27, 2026
12	Mcmillan LLP	Partial evidence	Toronto, ON, CanadaHQ checked Sep 27, 2026	501-1,000	885 contacts →
	Partial evidence “At McMillan LLP, we are a national business law firm that knows real-time solutions drive your success.” Source: RevenueBase Database · checked Sep 27, 2026
13	Benesch LAW	Partial evidence	Cleveland, OH, United StatesHQ checked Sep 27, 2026	501-1,000	848 contacts →
	Partial evidence “Benesch is an Am Law 200 business law firm and limited liability partnership with offices in Chicago, Cleveland, Columbus, New York, San Francisco and Wilmington.” Source: RevenueBase Database · checked Sep 27, 2026
14	Buchalter	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 27, 2026	501-1,000	843 contacts →
	Partial evidence “Buchalter is a full-service business law firm with offices in Arizona, California, Colorado, Georgia, Illinois, Oregon, Tennessee, Utah, and Washington.” Source: RevenueBase Database · checked Sep 27, 2026
15	Lisinski LAW Firm	Strong evidence	Dublin, OH, United StatesHQ checked Sep 27, 2026	1,001-5,000	814 contacts →
	Strong evidence “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…” Source: RevenueBase Database · checked Sep 27, 2026
16	CIBT	Partial evidence	Washington, DC, United StatesHQ checked Sep 27, 2026	1,001-5,000	768 contacts →
	Partial evidence “CIBT is the leading global provider of immigration and visa services for corporations and individuals with over 1,600 expert immigration and visa professionals, attorneys and…” Source: RevenueBase Database · checked Sep 27, 2026
17	Davies Ward Phillips & Vineberg LLP	Partial evidence	Toronto, ON, CanadaHQ checked Sep 27, 2026	501-1,000	752 contacts →
	Partial evidence “Davies is a leading Canadian business law firm focused on high-stakes matters.” Source: RevenueBase Database · checked Sep 27, 2026
18	Herzog	Partial evidence	Tel Aviv, IsraelHQ checked Sep 27, 2026	501-1,000	749 contacts →
	Partial evidence “Herzog Fox & Neeman is Israel’s largest law firm and has earned a reputation as market leader, evidenced by consistent top-tier rankings in both international and Israeli legal…” Source: RevenueBase Database · checked Sep 27, 2026
19	BCF	Partial evidence	Montréal, QC, CanadaHQ checked Sep 27, 2026	501-1,000	725 contacts →
	Partial evidence “With over 500 employees and 300 professionals, BCF Business Law is the go-to firm for business leaders, growing companies, and well-established global enterprises who have chosen…” Source: RevenueBase Database · checked Sep 27, 2026
20	VINGE	Partial evidence	Stockholm, SwedenHQ checked Sep 27, 2026	501-1,000	681 contacts →
	Partial evidence “We are a leading Nordic full-service law firm, with 580 expert employees and offices in Stockholm, Gothenburg, Malmo and Brussels.” Source: RevenueBase Database · checked Sep 27, 2026
21	Honigman LLP	Partial evidence	Detroit, MI, United StatesHQ checked Sep 27, 2026	501-1,000	669 contacts →
	Partial evidence “Honigman LLP is an Am Law 200 full-service, general business law firm with more than 400 attorneys counseling clients on complex issues across the country in Chicago, Michigan…” Source: RevenueBase Database · checked Sep 27, 2026
22	Mason Hayes & Curran LLP	Partial evidence	Dublin 4, IrelandHQ checked Sep 27, 2026	501-1,000	666 contacts →
	Partial evidence “Mason Hayes & Curran LLP is a leading Irish law firm based in Dublin with offices in San Francisco, New York and London, three of Ireland’s most important conduits for inward…” Source: RevenueBase Database · checked Sep 27, 2026
23	Alonso & Alonso Attorneys At Law, Pllc	Strong evidence	San Antonio, TX, United StatesHQ checked Sep 27, 2026	201-500	658 contacts →
	Strong evidence “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.” Source: RevenueBase Database · checked Sep 27, 2026
24	vezzilapolla.legal	Indirect evidence	Sao Paulo, BrazilHQ checked Sep 27, 2026	201-500	634 contacts →
	Indirect evidence “vezzilapolla.legal foi fundado em 2016, e conta atualmente com cerca de 600 profissionais.” Source: RevenueBase Database · checked Sep 27, 2026
25	Aird & Berlis LLP	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 27, 2026	501-1,000	586 contacts →
	Indirect evidence “Whether you are conducting business in Canada or abroad, Aird & Berlis LLP understands the realities of your work.” Source: RevenueBase Database · checked Sep 27, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: business immigration law firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names business immigration law firms.
Partial evidence: Its own public description names part of business immigration law firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name business immigration law firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 23,854 business immigration law firms worldwide

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Business immigration law firms worldwide at a glance

As of Sep 27, 2026

31.5%Verified-email coverage

10.4Average contacts per company

1-10Median size (employees)

2.3%Largest-city concentration · London

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

15,816

11-50

6,536

51-200

1,059

201-500

203

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among business immigration law firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
Coverage: Every country. Country and city lists for business immigration law firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “business immigration law firms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names business immigration law firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among business immigration law firms, and records with no verified work email.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 78,024 across the full list. 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 27, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Business immigration law firms by location

130 lists · largest first

Every Business immigration law firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names business immigration law firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many business immigration law firms are there worldwide?

RevenueBase identified 23,854 business immigration law firms worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

LAW Firm, headquartered in London, tops this list with the largest team on record.

Which country has the most business immigration law firms?

The United States leads with 5,360 companies, followed by Canada (1,855) and Brazil (1,627). Every business immigration law firms list by country and city is linked on this page.

Which city has the most business immigration law firms?

London leads with 537 headquartered companies, followed by Sao Paulo (505) and New York (496).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 78,024 verified decision-maker contacts tracked across these 23,854 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 27, 2026.

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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 Smart Search, 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.