Company lists · Data refreshed September 2026

Top 25 Business law firms based in Toronto, Canada

RevenueBase identified 577 business law firms headquartered in Toronto, Canada as of September 2026 and tracks 20,418 professional contacts across them, including 13,355 with verified work emails. Toronto is the largest hub.

This list covers 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 20, 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 20, 2026 86% judged on-target in blind review
577Companies
20,418Contacts tracked
13,355Verified emails
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The 25 largest business law firms based in Toronto, Canada

Ranked by team size
Top 25 of 577 business law firms based in Toronto, Canada, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to business 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Strong evidenceToronto, ON, CanadaHQ checked Sep 20, 20261,001-5,0002,288 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 20, 2026
2Indirect evidenceToronto, ON, CanadaHQ checked Sep 20, 20261,001-5,0001,913 contacts →

Indirect evidence

“McCarthy Tétrault provides a broad range of legal services, advising on large and complex assignments for Canadian and international interests.”

Source: RevenueBase Database · checked Sep 20, 2026
3Indirect evidenceToronto, ON, CanadaHQ checked Sep 20, 20261,001-5,0001,555 contacts →

Indirect evidence

“At Blake, Cassels & Graydon LLP (Blakes), we serve a diverse national and international client base.”

Source: RevenueBase Database · checked Sep 20, 2026
4Strong evidenceToronto, ON, CanadaHQ checked Sep 20, 20261,001-5,0001,544 contacts →

Strong evidence

“Osler is a leading business law firm uniquely positioned to advise Canadian, U.S.”

Source: RevenueBase Database · checked Sep 20, 2026
5Strong evidenceToronto, ON, CanadaHQ checked Sep 20, 20261,001-5,0001,492 contacts →

Strong 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 20, 2026
6Strong evidenceToronto, ON, CanadaHQ checked Sep 20, 20261,001-5,0001,423 contacts →

Strong 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 20, 2026
7Indirect evidenceToronto, ON, CanadaHQ checked Sep 20, 2026501-1,000983 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 20, 2026
8Strong evidenceToronto, ON, CanadaHQ checked Sep 20, 2026501-1,000804 contacts →

Strong 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 20, 2026
9Strong evidenceToronto, ON, CanadaHQ checked Sep 20, 2026501-1,000752 contacts →

Strong evidence

“Davies is a leading Canadian business law firm focused on high-stakes matters.”

Source: RevenueBase Database · checked Sep 20, 2026
10Indirect evidenceToronto, ON, CanadaHQ checked Sep 20, 2026501-1,000586 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 20, 2026
11Strong evidenceToronto, ON, CanadaHQ checked Sep 20, 2026201-500500 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 20, 2026
12Strong evidenceToronto, ON, CanadaHQ checked Sep 20, 2026201-500301 contacts →

Strong 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 20, 2026
13Indirect evidenceToronto, ON, CanadaHQ checked Sep 20, 2026201-500284 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 20, 2026
14Strong evidenceToronto, ON, CanadaHQ checked Sep 20, 2026201-500241 contacts →

Strong evidence

“Torkin Manes is a full-service law firm based in downtown Toronto.”

Source: RevenueBase Database · checked Sep 20, 2026
15Indirect evidenceToronto, ON, CanadaHQ checked Sep 20, 202651-200236 contacts →

Indirect evidence

“We bring together the knowledge, experience and energy of the whole firm to help our clients.”

Source: RevenueBase Database · checked Sep 20, 2026
16Indirect evidenceToronto, ON, CanadaHQ checked Sep 20, 2026201-500220 contacts →

Indirect evidence

“Welcome to Loopstra Nixon.”

Source: RevenueBase Database · checked Sep 20, 2026
17Strong evidenceToronto, ON, CanadaHQ checked Sep 20, 202651-200206 contacts →

Strong 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 20, 2026
18Strong evidenceToronto, ON, CanadaHQ checked Sep 20, 202651-200148 contacts →

Strong 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 20, 2026
19Indirect evidenceToronto, ON, CanadaHQ checked Sep 20, 202651-200135 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 20, 2026
20Strong evidenceToronto, ON, CanadaHQ checked Sep 20, 202651-200127 contacts →

Strong evidence

“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: RevenueBase Database · checked Sep 20, 2026
21Strong evidenceToronto, ON, CanadaHQ checked Sep 20, 202651-200114 contacts →

Strong evidence

“KRMC is a diverse, multi-service law firm located in the thriving uptown business district.”

Source: RevenueBase Database · checked Sep 20, 2026
22Strong evidenceToronto, ON, CanadaHQ checked Sep 20, 202651-20093 contacts →

Strong evidence

“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: RevenueBase Database · checked Sep 20, 2026
23Strong evidenceToronto, ON, CanadaHQ checked Sep 20, 202651-20089 contacts →

Strong evidence

“For over 15 years, Caravel Law has pioneered a new style of law firm in Canada, serving as an ideal alternative to the traditional options.”

Source: RevenueBase Database · checked Sep 20, 2026
24Strong evidenceToronto, ON, CanadaHQ checked Sep 20, 202651-20088 contacts →

Strong evidence

“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: RevenueBase Database · checked Sep 20, 2026
25Strong evidenceToronto, ON, CanadaHQ checked Sep 20, 202651-20088 contacts →

Strong 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 20, 2026

Showing 25 of 577 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 13,355 reachable decision-makers.

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Business law firms based in Toronto, Canada at a glance

As of Sep 20, 2026
65.4%Verified-email coverage
35.4Average contacts per company
1-10Median size (employees)
100.0%Largest-city concentration · Toronto
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
393
11-50
139
51-200
25
201-500
7
501-1,000
4
1,001-5,000
6

Email recency for this list is measured across the whole Canada list rather than for Toronto, so it is reported there. Company counts and contact totals on this page are exact for Toronto, over 577 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 business 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 Toronto, Canada whose own description of what they do matches “business law firms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search
RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names business law firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude
Companies whose own description does not clearly place them among business 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 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, 13,355 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 20, 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 business law firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

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

RevenueBase identified 577 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?

Fasken, headquartered in Toronto, tops this list with the largest team on record.

Which city has the most business law firms?

Toronto leads with 577 headquartered companies, followed by Montreal (238) and Vancouver (178).

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 13,355 verified decision-maker contacts tracked across these 577 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 20, 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.