Company lists · Data refreshed September 2026

Top 25 International business law firms based in Toronto, Canada

Name: International business law firms based in Toronto, Canada
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 4, 2026 409 companies tracked

RevenueBase identified 409 international business law firms headquartered in Toronto, Canada as of September 2026 and tracks 8,346 professional contacts across them, including 5,049 with verified work emails. Toronto is the largest hub.

This list covers international business law firms headquartered in Toronto, 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, how directly it supports the match, and when it was last checked. Data refreshed September 4, 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.

How to read this list HQ checked on every row Match evidence on every row Refreshed Sep 4, 2026 86% judged on-target in blind review

409Companies

8,346Contacts tracked

5,049Verified emails

Unlock all 409 companies Free signup · no credit card · 500 free credits

The 25 largest international business law firms based in Toronto, Canada

Ranked by team size

Top 25 of 409 international business law firms based in Toronto, Canada, ranked by team size, largest first. Data refreshed Sep 4, 2026. Evidence rates how directly each company's own description names international business law firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	Osler, Hoskin & Harcourt LLPPartial evidence	Toronto, ON, CanadaHQ checked Sep 4, 2026	1,001-5,000	1,561
	“Osler is a leading business law firm uniquely positioned to advise Canadian, U.S.” Source: company website · checked Sep 4, 2026
2	Cassels Brock & Blackwell LLPPartial evidence	Toronto, ON, CanadaHQ checked Sep 4, 2026	501-1,000	810
	“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: company website · checked Sep 4, 2026
3	Aird & Berlis LLPIndirect evidence	Toronto, ON, CanadaHQ checked Sep 4, 2026	501-1,000	572
	“Whether you are conducting business in Canada or abroad, Aird & Berlis LLP understands the realities of your work.” Source: company website · checked Sep 4, 2026
4	Goodmans LLPStrong evidence	Toronto, ON, CanadaHQ checked Sep 4, 2026	201-500	494
	“Goodmans LLP is recognized internationally as one of Canada's premier transaction law firms because our lawyers and clients are industry leaders.” Source: company website · checked Sep 4, 2026
5	Blaney Mcmurtry LLPPartial evidence	Toronto, ON, CanadaHQ checked Sep 4, 2026	201-500	298
	“Based in the heart of Toronto’s financial district, Blaney McMurtry LLP is one of Canada's premier law firms.” Source: company website · checked Sep 4, 2026
6	Weirfoulds LLPIndirect evidence	Toronto, ON, CanadaHQ checked Sep 4, 2026	201-500	282
	“For over 165 years, the lawyers of WeirFoulds have been proud to serve our clients in their most difficult and complex matters.” Source: company website · checked Sep 4, 2026
7	Torkin Manes LLPPartial evidence	Toronto, ON, CanadaHQ checked Sep 4, 2026	201-500	239
	“Torkin Manes is a full-service law firm based in downtown Toronto.” Source: company website · checked Sep 4, 2026
8	Loopstra Nixon LLPIndirect evidence	Toronto, ON, CanadaHQ checked Sep 4, 2026	201-500	218
	“Welcome to Loopstra Nixon.” Source: company website · checked Sep 4, 2026
9	Gardiner Roberts LLPPartial evidence	Toronto, ON, CanadaHQ checked Sep 4, 2026	51-200	204
	“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: company website · checked Sep 4, 2026
10	Pace LAW FirmPartial evidence	Toronto, ON, CanadaHQ checked Sep 4, 2026	51-200	123
	“Established in 1981, Pace Law Firm has dedicated itself to its goal of effecting positive changes in clients’ lives by representing them effectively in navigating the legal…” Source: company website · checked Sep 4, 2026
11	Kronis, Rotsztain, Margles, Cappel LLP KrmcPartial evidence	Toronto, ON, CanadaHQ checked Sep 4, 2026	51-200	107
	“KRMC is a diverse, multi-service law firm located in the thriving uptown business district.” Source: company website · checked Sep 4, 2026
12	Wildeboer Dellelce LLPPartial evidence	Toronto, ON, CanadaHQ checked Sep 4, 2026	51-200	93
	“Founded in 1993, Wildeboer Dellelce is one of Canada's premier transactional business law firms and a partner of choice for entrepreneurs and leaders driven to grow or transform…” Source: company website · checked Sep 4, 2026
13	Chaitons LLPPartial evidence	Toronto, ON, CanadaHQ checked Sep 4, 2026	51-200	87
	“Chaitons LLP is a leading multi-practice law firm based in Toronto, Canada, committed to delivering effective solutions, quality service and tenacious advocacy on behalf of its…” Source: company website · checked Sep 4, 2026
14	Mills & Mills LLPPartial evidence	Toronto, ON, CanadaHQ checked Sep 4, 2026	51-200	87
	“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: company website · checked Sep 4, 2026
15	Shibley Righton LLPPartial evidence	Toronto, ON, CanadaHQ checked Sep 4, 2026	51-200	83
	“Established in 1964, Shibley Righton LLP is a full-service law firm with offices in Toronto and Windsor, Ontario.” Source: company website · checked Sep 4, 2026
16	Dale & Lessmann LLPPartial evidence	Toronto, ON, CanadaHQ checked Sep 4, 2026	51-200	73
	“Tracing its origins back over one hundred years, Dale & Lessmann LLP is a full service business law firm based in Toronto, Ontario, Canada.” Source: company website · checked Sep 4, 2026
17	Owens Wright LLPIndirect evidence	Toronto, CanadaHQ checked Sep 4, 2026	51-200	68
	“We blend big firm expertise and experience with the attention and service of a boutique firm, allowing us to deliver an exceptional client-focused experience across a broad range…” Source: company website · checked Sep 4, 2026
18	Minden Gross LLPPartial evidence	Toronto, ON, CanadaHQ checked Sep 4, 2026	51-200	62
	“Minden Gross LLP is primarily a business-oriented law firm.” Source: company website · checked Sep 4, 2026
19	LAX O'sullivan Lisus Gottlieb LLPIndirect evidence	Toronto, ON, CanadaHQ checked Sep 4, 2026	11-50	60
	“Lax O’Sullivan Lisus Gottlieb LLP is Canada’s preeminent business litigation firm.” Source: company website · checked Sep 4, 2026
20	Garfinkle Biderman LLPPartial evidence	Toronto, ON, CanadaHQ checked Sep 4, 2026	11-50	60
	“Garfinkle Biderman is a cohesive, efficient and forward-thinking law firm.” Source: company website · checked Sep 4, 2026
21	Thornton Grout Finnigan LLPIndirect evidence	Toronto, ON, CanadaHQ checked Sep 4, 2026	11-50	59
	“Thornton Grout Finnigan LLP (TGF) was founded in 1998 with a very specific vision in mind: deliver a higher level of Restructuring and Litigation expertise - and service - to the…” Source: company website · checked Sep 4, 2026
22	Sotos LLPPartial evidence	Toronto, ON, CanadaHQ checked Sep 4, 2026	11-50	56
	“At Sotos LLP, we pride ourselves on being more than just lawyers, we are reliable partners you can trust to help navigate the complexities of business law.” Source: company website · checked Sep 4, 2026
23	Ricketts Harris LLPPartial evidence	Toronto, ON, CanadaHQ checked Sep 4, 2026	11-50	55
	“A full-service law firm with a downtown address but a down-to-earth way of looking at the world, Ricketts Harris exists to help solve some of life’s most important legal and…” Source: company website · checked Sep 4, 2026
24	Lewis & Associates LLPIndirect evidence	Toronto, ON, CanadaHQ checked Sep 4, 2026	11-50	54
	“Lewis & Associates LLP serves clients from all over the world on wide range of immigration matters and can help you determine your best options for successful immigration to…” Source: company website · checked Sep 4, 2026
25	Goldman Sloan Nash & Haber LLPIndirect evidence	Toronto, ON, CanadaHQ checked Sep 4, 2026	51-200	54
	“OUR FIRM: For more than 40 years, Goldman Sloan Nash & Haber (GSNH) LLP has helped leading businesses, entrepreneurs and individuals successfully navigate the maze of corporate &…” Source: company website · checked Sep 4, 2026

Showing 25 of 409 international business law firms based in Toronto, Canada

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 5,049 reachable decision-makers.

Free signup · no credit card

See all 409 companies

International business law firms based in Toronto, Canada at a glance

As of Sep 4, 2026

1-10Median size (employees)

TorontoLargest hub · 409 HQs

Contacts with mobile numbers

Sep 4, 2026Data refreshed

Companies by employee count

1-10

272

11-50

103

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured across the whole Canada list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for Toronto, over 409 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 international business law firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Toronto, Canada whose own description of what they do matches “international business law firms”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among international business law firms, and records with no verified work email. Companies headquartered outside Toronto 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 an evidence 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, 5,049 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 4, 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.

International business law firms by metro in Canada

International business law firms in Toronto409
International business law firms in Montreal197
International business law firms in Vancouver152
International business law firms in Calgary102
International business law firms in Mississauga77
International business law firms in Ottawa72
International business law firms in Edmonton54
International business law firms in Quebec40
International business law firms in Brampton30
International business law firms in Markham28
International business law firms in Surrey25

Frequently asked

How many international business law firms are there based in Toronto, Canada?

RevenueBase identified 409 international business law firms headquartered in Toronto, 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?

Osler, Hoskin & Harcourt LLP, headquartered in Toronto, tops this list with the largest team on record.

Which city has the most international business law firms?

Toronto leads with 409 headquartered companies, followed by Montreal (197) and Vancouver (152).

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 5,049 verified decision-maker contacts tracked across these 409 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 4, 2026.

Ready to reach these companies? Verified emails and direct dials for all 409 international business law firms based in Toronto, Canada. Start with a free account, no credit card.

Get the full list

Related lists

International business law firms by geography

Browse the directory

Browse: Companies home · International business law firms in Canada · All Canada lists · All International business law firms lists · New lists

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.