Company lists · Data refreshed September 2026

Top 25 Big international law firms based in Canada

Name: Big international law firms based in Canada
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 759 companies tracked

RevenueBase identified 759 big international law firms headquartered in Canada as of September 2026 and tracks 37,864 professional contacts across them, including 24,560 with verified work emails. Toronto is the largest hub.

This list covers big international 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 21, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 21, 2026 86% judged on-target in blind review

759Companies

37,864Contacts tracked

24,560Verified emails

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The 25 largest big international law firms based in Canada

Ranked by team size

Top 25 of 759 big international law firms based in Canada, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to big international 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	Borden Ladner Gervais LLP BLG	Partial evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	1,001-5,000	2,310 contacts →
	Partial evidence “We are BLG: Canada’s Law Firm.\| Nous sommes BLG, vos avocats au Canada.(French version below) Fully bilingual across all practice areas and sectors, BLG excels in Canada’s common…” Source: RevenueBase Database · checked Sep 21, 2026
2	Fasken	Strong evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	1,001-5,000	2,288 contacts →
	Strong evidence “About Fasken Fasken is a leading international law firm with more than 900 lawyers and ten offices on three continents.” Source: RevenueBase Database · checked Sep 21, 2026
3	Mccarthy Tétrault	Partial evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	1,001-5,000	1,913 contacts →
	Partial 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 21, 2026
4	Blake, Cassels & Graydon LLP	Partial evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	1,001-5,000	1,555 contacts →
	Partial evidence “At Blake, Cassels & Graydon LLP (Blakes), we serve a diverse national and international client base.” Source: RevenueBase Database · checked Sep 21, 2026
5	Osler, Hoskin & Harcourt LLP	Partial evidence	Toronto, ON, CanadaHQ checked Sep 21, 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 21, 2026
6	Stikeman Elliott LLP	Partial evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	1,001-5,000	1,492 contacts →
	Partial evidence “As a top-ranked Canadian business law firm, we advise clients on complex legal matters across borders and industries.” Source: RevenueBase Database · checked Sep 21, 2026
7	Miller Thomson LLP	Partial evidence	Toronto, ON, CanadaHQ checked Sep 21, 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 21, 2026
8	Bennett Jones	Strong evidence	Calgary, AB, CanadaHQ checked Sep 21, 2026	501-1,000	1,144 contacts →
	Strong evidence “For over a century, Bennett Jones has been an internationally recognized Canadian law firm founded and focused on principles of professional excellence, integrity, respect and…” Source: RevenueBase Database · checked Sep 21, 2026
9	Torys LLP	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	501-1,000	983 contacts →
	Indirect evidence “At Torys, we are in the constant pursuit of earning and building the trust of our clients through superior results and novel solutions.” Source: RevenueBase Database · checked Sep 21, 2026
10	Mcmillan LLP	Partial evidence	Toronto, ON, CanadaHQ checked Sep 21, 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 21, 2026
11	Cassels Brock & Blackwell LLP	Partial evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	501-1,000	804 contacts →
	Partial evidence “Cassels Brock & Blackwell LLP is a Canadian law firm focused on serving the transaction, advocacy, and advisory needs of the country’s most dynamic business sectors.” Source: RevenueBase Database · checked Sep 21, 2026
12	Davies Ward Phillips & Vineberg LLP	Partial evidence	Toronto, ON, CanadaHQ checked Sep 21, 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 21, 2026
13	BCF	Partial evidence	Montréal, QC, CanadaHQ checked Sep 21, 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 21, 2026
14	Stewart Mckelvey	Partial evidence	Halifax, NS, CanadaHQ checked Sep 21, 2026	201-500	599 contacts →
	Partial evidence “Stewart McKelvey is a full-service, Canadian law firm with more than 250 lawyers across six offices in Atlantic Canada.” Source: RevenueBase Database · checked Sep 21, 2026
15	Aird & Berlis LLP	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 21, 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 21, 2026
16	Mcinnes Cooper	Partial evidence	Halifax, NS, CanadaHQ checked Sep 21, 2026	501-1,000	572 contacts →
	Partial evidence “McInnes Cooper is a solutions-driven Canadian law firm and member of Lex Mundi, the world’s leading network of independent law firms.” Source: RevenueBase Database · checked Sep 21, 2026
17	Lavery	Strong evidence	Montréal, QC, CanadaHQ checked Sep 21, 2026	201-500	546 contacts →
	Strong evidence “Over a century of legal advice to domestic and international organizations has made Lavery Lawyers the leading independent law firm in Quebec (Canadian Lawyer).” Source: RevenueBase Database · checked Sep 21, 2026
18	Smart & Biggar	Partial evidence	Ottawa, ON, CanadaHQ checked Sep 21, 2026	501-1,000	521 contacts →
	Partial evidence “Smart & Biggar is a Canadian intellectual property law firm.” Source: RevenueBase Database · checked Sep 21, 2026
19	Cain Lamarre	Indirect evidence	Québec, QC, CanadaHQ checked Sep 21, 2026	501-1,000	507 contacts →
	Indirect evidence “Our firm boasts a large, well-established legal team guided by solid principles and a commitment to serving clients and their needs.” Source: RevenueBase Database · checked Sep 21, 2026
20	Goodmans LLP	Strong evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	201-500	500 contacts →
	Strong evidence “Goodmans LLP is recognized internationally as one of Canada's premier transaction law firms because our lawyers and clients are industry leaders.” Source: RevenueBase Database · checked Sep 21, 2026
21	Blaney Mcmurtry LLP	Partial evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	201-500	301 contacts →
	Partial evidence “Based in the heart of Toronto’s financial district, Blaney McMurtry LLP is one of Canada's premier law firms.” Source: RevenueBase Database · checked Sep 21, 2026
22	Field LAW	Partial evidence	Edmonton, AB, CanadaHQ checked Sep 21, 2026	201-500	296 contacts →
	Partial evidence “Field Law is a western and northern regional business law firm listed as one of the largest firms in Canada with offices in Calgary, Canmore, Edmonton, Alberta and Yellowknife…” Source: RevenueBase Database · checked Sep 21, 2026
23	Weirfoulds LLP	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	201-500	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 21, 2026
24	Burnet, Duckworth & Palmer LLP	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 21, 2026	201-500	272 contacts →
	Indirect evidence “The world is changing, and it’s happening faster than ever.” Source: RevenueBase Database · checked Sep 21, 2026
25	Siskinds LLP	Partial evidence	London, ON, CanadaHQ checked Sep 21, 2026	51-200	271 contacts →
	Partial evidence “Siskinds is one of Southwestern Ontario’s leading law firms.” Source: RevenueBase Database · checked Sep 21, 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: big international 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 big international law firms.
Partial evidence: Its own public description names part of big international law firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name big international 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 759 big international law firms based in Canada

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Big international law firms based in Canada at a glance

As of Sep 21, 2026

64.9%Verified-email coverage

49.9Average contacts per company

11-50Median size (employees)

24.6%Largest-city concentration · Toronto

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

378

11-50

237

51-200

102

201-500

501-1,000

1,001-5,000

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 759 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 big international 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 “big international 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 big international 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 big international 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, 24,560 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 21, 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.

Big international law firms by metro

Big international law firms in Toronto187
Big international law firms in Montreal90
Big international law firms in Vancouver60
Big international law firms in Ottawa35
Big international law firms in Calgary32
Big international law firms in Edmonton31
Big international law firms in Quebec27

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 big international 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 big international law firms are there based in Canada?

RevenueBase identified 759 big international 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?

Borden Ladner Gervais LLP BLG, headquartered in Toronto, tops this list with the largest team on record.

Which city has the most big international law firms?

Toronto leads with 187 headquartered companies, followed by Montreal (90) and Vancouver (60).

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 24,560 verified decision-maker contacts tracked across these 759 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 21, 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.