Company lists · Data refreshed September 2026
Top 25 Administrative law firms based in Canada
RevenueBase identified 563 administrative law firms headquartered in Canada as of September 2026 and tracks 7,570 professional contacts across them, including 4,557 with verified work emails. Toronto is the largest hub.
This list covers administrative law firms headquartered in Canada, 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.
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.
The 25 largest administrative law firms based in Canada
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 450 contacts → | ||||
Partial evidence “Lerners LLP is a full service law firm that has grown to become one of Ontario’s largest firms.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 2 | 351 contacts → | ||||
Partial evidence “As a leading independent law firm in Québec, Langlois brings together more than 325 people, including some 185 legal professionals, in our Montréal and Québec City offices.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 3 | 284 contacts → | ||||
Indirect evidence “For over 165 years, the lawyers of WeirFoulds have been proud to serve our clients in their most difficult and complex matters.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 4 | 271 contacts → | ||||
Partial evidence “Siskinds is one of Southwestern Ontario’s leading law firms.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 5 | 223 contacts → | ||||
Partial evidence “Founded in 1907, Harper Grey LLP is a leading Vancouver, BC based business and litigation law firm.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 6 | 213 contacts → | ||||
Indirect evidence “Dunton Rainville is a firm of over 285 people, including some 135 lawyers, notaries and labour relations consultants.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 7 | 206 contacts → | ||||
Partial evidence “Founded in the 1920s, Gardiner Roberts LLP (GR) is a full-service law firm advising clients ranging from leading global enterprises through to small and medium-sized companies…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 8 | 206 contacts → | ||||
Indirect evidence “With offices in Toronto (Canada), Philadelphia (Pennsylvania), Providence (Rhode Island), Vail (Colorado), Orlando (Florida), Cleveland (Ohio) and Boston (Massachusetts).” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 9 | 182 contacts → | ||||
Partial evidence “Brownlee LLP is a Western Canadian law firm with offices in Calgary, Edmonton, Vancouver, and Regina.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 10 | 154 contacts → | ||||
Partial evidence “Law Office” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 11 | 148 contacts → | ||||
Partial evidence “Beard Winter LLP is one of Canada's Best Law Firms for 2023 as recognized by the Globe and Mail, with a special distinction in the practice area of Insurance Law.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 12 | 135 contacts → | ||||
Indirect evidence “Since 1964, Devry Smith Frank LLP (DSF) has provided trusted legal service to individuals, businesses, and institutions throughout Ontario.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 13 | 122 contacts → | ||||
Partial evidence “LJT is a boutique law firm serving its business clients for more than 30 years in the following fields of practice: Business Law, Taxation, Real Estate, Advertising and…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 14 | 100 contacts → | ||||
Indirect evidence “Ross & McBride LLP's clients include financial institutions and non-profit organizations, large public corporations and small family businesses, senior citizens and young people.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 15 | 88 contacts → | ||||
Partial evidence “Mills & Mills LLP is a Toronto law firm established 130 years ago which provides legal services of the highest quality to businesses and individuals, as well as to charitable and…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 16 | 86 contacts → | ||||
Indirect evidence “Bélanger Sauvé advises and represents many Québec municipalities, inter-municipal boards, regional county municipalities, insurers, companies and Québec public and…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 17 | 77 contacts → | ||||
Indirect evidence “With over 125 years in the Kingston community, we are confident in our ability to provide you with nothing short of excellence.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 18 | 63 contacts → | ||||
Indirect evidence “Lax O’Sullivan Lisus Gottlieb LLP is Canada’s preeminent business litigation firm.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 19 | 63 contacts → | ||||
Partial evidence “Carbert Waite LLP is a litigation-focused law firm based in Calgary, AB, with nearly 30 years of experience helping businesses, professionals, and individuals navigate complex…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 20 | 59 contacts → | ||||
Partial evidence “Founded in 1980, Osuji & Smith is a diverse, fast growing, award winning Calgary full service law firm with focus on Employment Law, Civil Litigation, Real Estate, Family &…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 21 | 58 contacts → | ||||
Partial evidence “KMSC Law LLP is a full-service law firm that has been providing legal services to the businesses, people and municipalities in the Peace Country region for over 100 years.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 22 | 58 contacts → | ||||
Indirect evidence “Established in 1982, we are experienced litigation lawyers dedicated to fighting for what is right.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 23 | 57 contacts → | ||||
Partial evidence “Located in the heart of Calgary, Alberta, DBB is a full-service law firm that has been serving Calgarians for over 40 years.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 24 | 56 contacts → | ||||
Partial evidence “Lewis & Associates LLP is a Toronto-based law firm providing experienced legal representation in Canadian immigration, refugee, family, real estate, and civil litigation matters.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 25 | 55 contacts → | ||||
Partial evidence “Merchant Law Group LLP (MLG) is a Western-based, full-service law firm with offices spanning from British Columbia to Quebec.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
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: administrative 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 administrative law firms.
- Partial evidence
- Its own public description names part of administrative law firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name administrative 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 563 administrative law firms based in Canada
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Administrative law firms based in Canada at a glance
As of Sep 27, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for Canada, so it is reported there. Company counts and contact totals on this page are exact for Canada, over 563 companies.
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 administrative 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.
- What qualifies
- Companies headquartered in Canada whose own description of what they do matches “administrative 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 administrative 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 administrative law firms, and records with no verified work email. Companies headquartered outside Canada are excluded even when they keep an office there.
- 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, 4,557 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.
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 administrative 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 administrative law firms are there based in Canada?
RevenueBase identified 563 administrative law firms headquartered in Canada 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?
Lerners LLP, headquartered in London, tops this list with the largest team on record.
Which city has the most administrative law firms?
Toronto leads with 130 headquartered companies, followed by Montreal (45) and Calgary (37).
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 4,557 verified decision-maker contacts tracked across these 563 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.
Ready to reach these companies? Verified emails and direct dials for all 563 administrative law firms based in Canada. 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 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.
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