Company lists · Data refreshed September 2026
Top 25 Big 5 law firms based in Ottawa, Canada
RevenueBase identified 75 company matches for big 5 law firms associated with Ottawa, Canada as of September 2026 and tracks 1,895 professional contacts across them, including 1,194 with verified work emails. Across Canada, Toronto is the largest hub for this category (411 companies); Ottawa has 75.
This list covers company matches for big 5 law firms associated with Ottawa, Canada, 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 23, 2026.
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 big 5 law firms based in Ottawa, Canada
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 521 contacts → | ||||
Exact match “Smart & Biggar is a Canadian intellectual property law firm.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase | |||||
| 2 | 131 contacts → | ||||
Exact match “MBM Intellectual Property Law is a dynamic and progressive law firm that practices exclusively in the area of intellectual property (IP) with offices throughout Canada.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase | |||||
| 3 | 120 contacts → | ||||
Exact match “Nelligan Law is an Ottawa-based multi-practice law firm.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase | |||||
| 4 | 103 contacts → | ||||
Exact match “Founded in Ottawa in 1971, Perley-Robertson, Hill & McDougall has provided effective, innovative legal solutions to Canadian and international clients on a broad range of business…” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase | |||||
| 5 | 99 contacts → | ||||
Exact match “Every client.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase | |||||
| 6 | 94 contacts → | ||||
Exact match “Since 1987, Emond Harnden has been at the forefront of labour and employment law, proudly serving employers across Canada.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase | |||||
| 7 | 88 contacts → | ||||
Exact match “Since opening its doors in 1946, Soloway Wright LLP has built a proud history of serving its clients and community.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase | |||||
| 8 | 70 contacts → | ||||
Exact match “Welcome to Mann Lawyers LLP.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase | |||||
| 9 | 63 contacts → | ||||
Exact match “LaBarge Weinstein LLP, a business law firm, has been working with clients in all stages of their business, from startup to exit since 1997.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase | |||||
| 10 | 56 contacts → | ||||
Exact match “Sicotte Guilbault focuses on providing clients with a wide range of specialized corporate, commercial, municipal, employment, real estate, litigation & alternate dispute…” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase | |||||
| 11 | 52 contacts → | ||||
Exact match “At Low Murchison Radnoff LLP we provide a full range of legal services to our clients.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase | |||||
| 12 | 43 contacts → | ||||
Exact match “Our roots go back to 1982 when our Managing Partner, Stephen Tierney, opened his law practice in Ottawa.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase | |||||
| 13 | 37 contacts → | ||||
Exact match “For over thirty-five years, LMS Lawyers has remained a leading full-service law firm serving Eastern Ontario, with its headquarters in Ottawa.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase | |||||
| 14 | 22 contacts → | ||||
Exact match “Founded in 2014, Conway is a boutique litigation firm located in Ottawa.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase | |||||
| 15 | 22 contacts → | ||||
Exact match “VINCENT DAGENAIS GIBSON is one of Ottawa's leading bilingual law firms, serving the National Capital Region and surrounding areas since 1897.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase | |||||
| 16 | 21 contacts → | ||||
Exact match “Rasmussen Starr Ruddy LLP (RSR) is a highly respected, Ottawa-based law firm offering forward-thinking legal counsel for both businesses and individuals.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase | |||||
| 17 | 15 contacts → | ||||
Exact match “As a full-service boutique law firm, SKS Law LLP is your trusted source for exceptional representation.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase | |||||
| 18 | 14 contacts → | ||||
Exact match “Founded in 1959 by Peter Kirby our firm is home to a team of highly qualified professionals who focus entirely upon intellectual property.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase | |||||
| 19 | 14 contacts → | ||||
Exact match “Aventum IP Law LLP (formerly Shapiro Cohen LLP) is an intellectual property firm located in the high-tech hub of Ottawa, Ontario.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase | |||||
| 20 | 13 contacts → | ||||
Exact match “Williams Litigation Lawyers LLP is a prominent litigation law firm founded in 1979.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase | |||||
| 21 | 11 contacts → | ||||
Exact match “First, we work with you.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase | |||||
| 22 | 10 contacts → | ||||
Exact match “Arbique & Ahde is a small personal law firm serving the needs of both individual and corporate clients.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase | |||||
| 23 | 10 contacts → | ||||
Exact match “Canada's Entertainment Law Boutique™ We’re Canadian entertainment lawyers who understand the business of creative industries (film & television, music, digital media, software…” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase | |||||
| 24 | 10 contacts → | ||||
Exact match “Aitken Klee specializes in complex intellectual property litigation.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase | |||||
| 25 | 10 contacts → | ||||
Exact match “Protecting IP Assets in Canada & Around the World If you are a brand or technology owner, you don’t have to be told about the value of protecting and enforcing your assets.” Recorded in the RevenueBase company graph · Sep 23, 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 “big 5 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 75 big 5 law firms based in Ottawa, Canada
See the full list, filter by size, metro and specialty, and access 1,194 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Big 5 law firms based in Ottawa, Canada at a glance
As of Sep 23, 2026Companies by employee count
Email recency for this list is measured across the whole Canada list rather than for Ottawa, so it is reported there. Company counts and contact totals on this page are exact for Ottawa, over 75 companies.
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.
- What qualifies
- Company records associated with Ottawa, Canada whose business descriptions match “big 5 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. Where headquarters information is recorded, preview rows are also filtered to this page’s location. 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 1,194 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 23, 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.
Big 5 law firms by metro in Canada
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 “big 5 law firms”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many big 5 law firms are there based in Ottawa, Canada?
RevenueBase identified 75 company matches for big 5 law firms associated with Ottawa, Canada 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?
Smart & Biggar tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city in Canada has the most big 5 law firms?
Toronto leads Canada with 411 company records, followed by Vancouver (140) and Montreal (136). Ottawa has 75.
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 1,194 professional contacts with verified work emails tracked across these 75 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 23, 2026.
Ready to reach these companies? Verified emails and direct dials for all 75 big 5 law firms based in Ottawa, Canada. Start with a free account, no credit card.
Download this list →Related lists
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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 big 5 law firms based in Ottawa, Canada
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 75 matching company records for big 5 law firms based in Ottawa, Canada, with 1,895 tracked contacts and 1,194 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 23, 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 big 5 law firms based in Ottawa, Canada
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 |  Smart & Biggarsmartbiggar.caHQ: Ottawa, ON, CanadaReported employees: 501-1,000 | Ottawa, ON, Canada | 501-1,000 | Exact match | 521 contacts → |
“Smart & Biggar is a Canadian intellectual property law firm.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | HQ: Ottawa, ON, CanadaReported employees: 51-200 | Ottawa, ON, Canada | 51-200 | Exact match | 131 contacts → |
“MBM Intellectual Property Law is a dynamic and progressive law firm that practices exclusively in the area of intellectual property (IP) with offices throughout Canada.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Nelligan LAWnelliganlaw.caHQ: Ottawa, ON, CanadaReported employees: 51-200 | Ottawa, ON, Canada | 51-200 | Exact match | 120 contacts → |
“Nelligan Law is an Ottawa-based multi-practice law firm.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Perley-Robertson, Hill & Mcdougallperlaw.ca HQ: Ottawa, ON, CanadaReported employees: 51-200 | Ottawa, ON, Canada | 51-200 | Exact match | 103 contacts → |
“Founded in Ottawa in 1971, Perley-Robertson, Hill & McDougall has provided effective, innovative legal solutions to Canadian and international clients on a broad range of business…” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Kelly Santini LLPkellysantini.comHQ: Ottawa, ON, CanadaReported employees: 51-200 | Ottawa, ON, Canada | 51-200 | Exact match | 99 contacts → |
“Every client.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Emond Harndenehlaw.caHQ: Ottawa, ON, CanadaReported employees: 51-200 | Ottawa, ON, Canada | 51-200 | Exact match | 94 contacts → |
“Since 1987, Emond Harnden has been at the forefront of labour and employment law, proudly serving employers across Canada.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Soloway Wright LLPsolowaywright.comHQ: Ottawa, ON, CanadaReported employees: 51-200 | Ottawa, ON, Canada | 51-200 | Exact match | 88 contacts → |
“Since opening its doors in 1946, Soloway Wright LLP has built a proud history of serving its clients and community.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Mann Lawyers LLPmannlawyers.comHQ: Ottawa, ON, CanadaReported employees: 51-200 | Ottawa, ON, Canada | 51-200 | Exact match | 70 contacts → |
“Welcome to Mann Lawyers LLP.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Labarge Weinstein LLPlwlaw.comHQ: Ottawa, ON, CanadaReported employees: 11-50 | Ottawa, ON, Canada | 11-50 | Exact match | 63 contacts → |
“LaBarge Weinstein LLP, a business law firm, has been working with clients in all stages of their business, from startup to exit since 1997.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Sicotte Guilbault Legal Servicessicotte.caHQ: Ottawa, ON, CanadaReported employees: 51-200 | Ottawa, ON, Canada | 51-200 | Exact match | 56 contacts → |
“Sicotte Guilbault focuses on providing clients with a wide range of specialized corporate, commercial, municipal, employment, real estate, litigation & alternate dispute…” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  LOW Murchison Radnoff LLPlmrlawyers.comHQ: Ottawa, ON, CanadaReported employees: 51-200 | Ottawa, ON, Canada | 51-200 | Exact match | 52 contacts → |
“At Low Murchison Radnoff LLP we provide a full range of legal services to our clients.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Tierney Stauffer LLPtslawyers.caHQ: Ottawa, ON, CanadaReported employees: 51-200 | Ottawa, ON, Canada | 51-200 | Exact match | 43 contacts → |
“Our roots go back to 1982 when our Managing Partner, Stephen Tierney, opened his law practice in Ottawa.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  LMS Lawyers LLPlmslawyers.comHQ: Ottawa, ON, CanadaReported employees: 11-50 | Ottawa, ON, Canada | 11-50 | Exact match | 37 contacts → |
“For over thirty-five years, LMS Lawyers has remained a leading full-service law firm serving Eastern Ontario, with its headquarters in Ottawa.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Conway Baxter Wilson LLP S.R.Lconwaylitigation.caHQ: Ottawa, ON, CanadaReported employees: 11-50 | Ottawa, ON, Canada | 11-50 | Exact match | 22 contacts → |
“Founded in 2014, Conway is a boutique litigation firm located in Ottawa.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Vincent Dagenais Gibsonvdg.caHQ: Ottawa, ON, CanadaReported employees: 11-50 | Ottawa, ON, Canada | 11-50 | Exact match | 22 contacts → |
“VINCENT DAGENAIS GIBSON is one of Ottawa's leading bilingual law firms, serving the National Capital Region and surrounding areas since 1897.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Rasmussen Starr Ruddy LLPrsrlaw.caHQ: Ottawa, ON, CanadaReported employees: 11-50 | Ottawa, ON, Canada | 11-50 | Exact match | 21 contacts → |
“Rasmussen Starr Ruddy LLP (RSR) is a highly respected, Ottawa-based law firm offering forward-thinking legal counsel for both businesses and individuals.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  SKS LAW LLPskslaw.caHQ: Ottawa, ON, CanadaReported employees: 1-10 | Ottawa, ON, Canada | 1-10 | Exact match | 15 contacts → |
“As a full-service boutique law firm, SKS Law LLP is your trusted source for exceptional representation.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Kirby Eades Gale Bakerkirbyip.comHQ: Ottawa, ON, CanadaReported employees: 11-50 | Ottawa, ON, Canada | 11-50 | Exact match | 14 contacts → |
“Founded in 1959 by Peter Kirby our firm is home to a team of highly qualified professionals who focus entirely upon intellectual property.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Aventum IP LAW LLPaventum.lawHQ: Ottawa, ON, CanadaReported employees: 11-50 | Ottawa, ON, Canada | 11-50 | Exact match | 14 contacts → |
“Aventum IP Law LLP (formerly Shapiro Cohen LLP) is an intellectual property firm located in the high-tech hub of Ottawa, Ontario.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Williams Litigation Lawyers LLP Avocats Plaidants S.R.Lwilliamslitigation.caHQ: Ottawa, ON, CanadaReported employees: 11-50 | Ottawa, ON, Canada | 11-50 | Exact match | 13 contacts → |
“Williams Litigation Lawyers LLP is a prominent litigation law firm founded in 1979.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  S.R.L. Avocats Lister Beaupré Lawyers LLPlisterlawyers.comHQ: Ottawa, ON, CanadaReported employees: 11-50 | Ottawa, ON, Canada | 11-50 | Exact match | 11 contacts → |
“First, we work with you.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Arbique & Ahde Associate Lawyersarbiqueahde.comHQ: Ottawa, ON, CanadaReported employees: 11-50 | Ottawa, ON, Canada | 11-50 | Exact match | 10 contacts → |
“Arbique & Ahde is a small personal law firm serving the needs of both individual and corporate clients.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Edwards Creative LAWedwardslaw.caHQ: Ottawa, ON, CanadaReported employees: 1-10 | Ottawa, ON, Canada | 1-10 | Exact match | 10 contacts → |
“Canada's Entertainment Law Boutique™ We’re Canadian entertainment lawyers who understand the business of creative industries (film & television, music, digital media, software…” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Aitken Klee LLPaitkenklee.comHQ: Ottawa, ON, CanadaReported employees: 11-50 | Ottawa, ON, Canada | 11-50 | Exact match | 10 contacts → |
“Aitken Klee specializes in complex intellectual property litigation.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Ollip P.Collip.comHQ: Ottawa, ON, CanadaReported employees: 1-10 | Ottawa, ON, Canada | 1-10 | Exact match | 10 contacts → |
“Protecting IP Assets in Canada & Around the World If you are a brand or technology owner, you don’t have to be told about the value of protecting and enforcing your assets.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 75 company matches
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Big 5 law firms: dataset insights
September 23, 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
75 records in the displayed employee bands.
0 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 Canada list rather than for Ottawa, so it is reported there. Company counts and contact totals on this page are exact for Ottawa, over 75 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 23, 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 ↗
Big 5 law firms by metro in Canada
Questions about this company list
What does Exact match mean for big 5 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 big 5 law firms did RevenueBase find based in Ottawa, Canada?
The saved snapshot records 75 matching company records, 1,895 tracked contacts and 1,194 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 23, 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.
Related lists
Big 5 law firms by geography
- Big 5 law firms based in Brazil
- Big 5 law firms based in the United States
- Big 5 law firms based in France
- Big 5 law firms based in the United Kingdom
- Big 5 law firms based in Germany
- Big 5 law firms based in Italy
- Big 5 law firms based in South Africa
- Big 5 law firms based in Spain
- Big 5 law firms based in Canada
- Big 5 law firms based in Switzerland
- Big 5 law firms based in Belgium
- Big 5 law firms based in Mexico
Cite this list
RevenueBase Data Team. Top 25 big 5 law firms based in Ottawa, Canada. Snapshot: September 23, 2026. https://revenuebase.ai/companies/big-5-law-firms/canada/ottawa.
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 big 5 law firms based in Ottawa, Canada
RevenueBase records 75 matching company records for big 5 law firms based in Ottawa, Canada, with 1,895 tracked contacts and 1,194 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 23, 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 big 5 law firms based in Ottawa, Canada
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 | Smart & Biggarsmartbiggar.ca HQ: Ottawa, ON, CanadaReported employees: 501-1,000 | Ottawa, ON, Canada | 501-1,000 | Exact match | 521 contacts → |
“Smart & Biggar is a Canadian intellectual property law firm.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | HQ: Ottawa, ON, CanadaReported employees: 51-200 | Ottawa, ON, Canada | 51-200 | Exact match | 131 contacts → |
“MBM Intellectual Property Law is a dynamic and progressive law firm that practices exclusively in the area of intellectual property (IP) with offices throughout Canada.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Nelligan LAWnelliganlaw.ca HQ: Ottawa, ON, CanadaReported employees: 51-200 | Ottawa, ON, Canada | 51-200 | Exact match | 120 contacts → |
“Nelligan Law is an Ottawa-based multi-practice law firm.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Perley-Robertson, Hill & Mcdougallperlaw.ca HQ: Ottawa, ON, CanadaReported employees: 51-200 | Ottawa, ON, Canada | 51-200 | Exact match | 103 contacts → |
“Founded in Ottawa in 1971, Perley-Robertson, Hill & McDougall has provided effective, innovative legal solutions to Canadian and international clients on a broad range of business…” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Kelly Santini LLPkellysantini.com HQ: Ottawa, ON, CanadaReported employees: 51-200 | Ottawa, ON, Canada | 51-200 | Exact match | 99 contacts → |
“Every client.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Emond Harndenehlaw.ca HQ: Ottawa, ON, CanadaReported employees: 51-200 | Ottawa, ON, Canada | 51-200 | Exact match | 94 contacts → |
“Since 1987, Emond Harnden has been at the forefront of labour and employment law, proudly serving employers across Canada.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Soloway Wright LLPsolowaywright.com HQ: Ottawa, ON, CanadaReported employees: 51-200 | Ottawa, ON, Canada | 51-200 | Exact match | 88 contacts → |
“Since opening its doors in 1946, Soloway Wright LLP has built a proud history of serving its clients and community.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Mann Lawyers LLPmannlawyers.com HQ: Ottawa, ON, CanadaReported employees: 51-200 | Ottawa, ON, Canada | 51-200 | Exact match | 70 contacts → |
“Welcome to Mann Lawyers LLP.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Labarge Weinstein LLPlwlaw.com HQ: Ottawa, ON, CanadaReported employees: 11-50 | Ottawa, ON, Canada | 11-50 | Exact match | 63 contacts → |
“LaBarge Weinstein LLP, a business law firm, has been working with clients in all stages of their business, from startup to exit since 1997.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Sicotte Guilbault Legal Servicessicotte.ca HQ: Ottawa, ON, CanadaReported employees: 51-200 | Ottawa, ON, Canada | 51-200 | Exact match | 56 contacts → |
“Sicotte Guilbault focuses on providing clients with a wide range of specialized corporate, commercial, municipal, employment, real estate, litigation & alternate dispute…” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | LOW Murchison Radnoff LLPlmrlawyers.com HQ: Ottawa, ON, CanadaReported employees: 51-200 | Ottawa, ON, Canada | 51-200 | Exact match | 52 contacts → |
“At Low Murchison Radnoff LLP we provide a full range of legal services to our clients.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Tierney Stauffer LLPtslawyers.ca HQ: Ottawa, ON, CanadaReported employees: 51-200 | Ottawa, ON, Canada | 51-200 | Exact match | 43 contacts → |
“Our roots go back to 1982 when our Managing Partner, Stephen Tierney, opened his law practice in Ottawa.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | LMS Lawyers LLPlmslawyers.com HQ: Ottawa, ON, CanadaReported employees: 11-50 | Ottawa, ON, Canada | 11-50 | Exact match | 37 contacts → |
“For over thirty-five years, LMS Lawyers has remained a leading full-service law firm serving Eastern Ontario, with its headquarters in Ottawa.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Conway Baxter Wilson LLP S.R.Lconwaylitigation.ca HQ: Ottawa, ON, CanadaReported employees: 11-50 | Ottawa, ON, Canada | 11-50 | Exact match | 22 contacts → |
“Founded in 2014, Conway is a boutique litigation firm located in Ottawa.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Vincent Dagenais Gibsonvdg.ca HQ: Ottawa, ON, CanadaReported employees: 11-50 | Ottawa, ON, Canada | 11-50 | Exact match | 22 contacts → |
“VINCENT DAGENAIS GIBSON is one of Ottawa's leading bilingual law firms, serving the National Capital Region and surrounding areas since 1897.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Rasmussen Starr Ruddy LLPrsrlaw.ca HQ: Ottawa, ON, CanadaReported employees: 11-50 | Ottawa, ON, Canada | 11-50 | Exact match | 21 contacts → |
“Rasmussen Starr Ruddy LLP (RSR) is a highly respected, Ottawa-based law firm offering forward-thinking legal counsel for both businesses and individuals.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | SKS LAW LLPskslaw.ca HQ: Ottawa, ON, CanadaReported employees: 1-10 | Ottawa, ON, Canada | 1-10 | Exact match | 15 contacts → |
“As a full-service boutique law firm, SKS Law LLP is your trusted source for exceptional representation.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Kirby Eades Gale Bakerkirbyip.com HQ: Ottawa, ON, CanadaReported employees: 11-50 | Ottawa, ON, Canada | 11-50 | Exact match | 14 contacts → |
“Founded in 1959 by Peter Kirby our firm is home to a team of highly qualified professionals who focus entirely upon intellectual property.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Aventum IP LAW LLPaventum.law HQ: Ottawa, ON, CanadaReported employees: 11-50 | Ottawa, ON, Canada | 11-50 | Exact match | 14 contacts → |
“Aventum IP Law LLP (formerly Shapiro Cohen LLP) is an intellectual property firm located in the high-tech hub of Ottawa, Ontario.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Williams Litigation Lawyers LLP Avocats Plaidants S.R.Lwilliamslitigation.ca HQ: Ottawa, ON, CanadaReported employees: 11-50 | Ottawa, ON, Canada | 11-50 | Exact match | 13 contacts → |
“Williams Litigation Lawyers LLP is a prominent litigation law firm founded in 1979.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | S.R.L. Avocats Lister Beaupré Lawyers LLPlisterlawyers.com HQ: Ottawa, ON, CanadaReported employees: 11-50 | Ottawa, ON, Canada | 11-50 | Exact match | 11 contacts → |
“First, we work with you.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Arbique & Ahde Associate Lawyersarbiqueahde.com HQ: Ottawa, ON, CanadaReported employees: 11-50 | Ottawa, ON, Canada | 11-50 | Exact match | 10 contacts → |
“Arbique & Ahde is a small personal law firm serving the needs of both individual and corporate clients.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Edwards Creative LAWedwardslaw.ca HQ: Ottawa, ON, CanadaReported employees: 1-10 | Ottawa, ON, Canada | 1-10 | Exact match | 10 contacts → |
“Canada's Entertainment Law Boutique™ We’re Canadian entertainment lawyers who understand the business of creative industries (film & television, music, digital media, software…” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Aitken Klee LLPaitkenklee.com HQ: Ottawa, ON, CanadaReported employees: 11-50 | Ottawa, ON, Canada | 11-50 | Exact match | 10 contacts → |
“Aitken Klee specializes in complex intellectual property litigation.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Ollip P.Collip.com HQ: Ottawa, ON, CanadaReported employees: 1-10 | Ottawa, ON, Canada | 1-10 | Exact match | 10 contacts → |
“Protecting IP Assets in Canada & Around the World If you are a brand or technology owner, you don’t have to be told about the value of protecting and enforcing your assets.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 75 company matches
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Big 5 law firms: dataset insights
September 23, 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
75 records in the displayed employee bands.
0 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 Canada list rather than for Ottawa, so it is reported there. Company counts and contact totals on this page are exact for Ottawa, over 75 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 23, 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 ↗
Big 5 law firms by metro in Canada
Questions about this company list
What does Exact match mean for big 5 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 big 5 law firms did RevenueBase find based in Ottawa, Canada?
The saved snapshot records 75 matching company records, 1,895 tracked contacts and 1,194 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 23, 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 big 5 law firms based in Ottawa, Canada. Snapshot: September 23, 2026. https://revenuebase.ai/companies/big-5-law-firms/canada/ottawa.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗