Company lists · Data refreshed August 2026

Top 25 Constitutional law firms based in Canada

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

Compiled by the RevenueBase Data Team Data refreshed Aug 31, 2026 198 companies tracked

RevenueBase identified 198 constitutional law firms headquartered in Canada as of August 2026 and tracks 2,111 professional contacts across them, including 1,170 with verified work emails and 109 with mobile numbers. Toronto is the largest hub.

This list covers constitutional 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 August 31, 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 RevenueBase Smart Search rating on every row Refreshed Aug 31, 2026 86% judged on-target in blind review

198Companies

2,111Contacts tracked

1,170Verified emails

109Mobile numbers

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The 25 largest constitutional law firms based in Canada

Ranked by team size

Top 25 of 198 constitutional law firms based in Canada, ranked by team size, largest first. Data refreshed Aug 31, 2026. RevenueBase Smart Search rates how each company's information relates to constitutional 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	Lerners LLP	Partial evidence	Kitchener, ON, Canada	201-500	447 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 Aug 31, 2026
2	Weirfoulds LLP	Indirect evidence	Toronto, ON, Canada	201-500	282 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 Aug 31, 2026
3	Pace LAW Firm	Partial evidence	Toronto, ON, Canada	51-200	123 contacts →
	Partial 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 Aug 31, 2026
4	Merchant LAW Group LLP	Partial evidence	Regina, SK, Canada	11-50	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 Aug 31, 2026
5	Aikins, Macaulay & Thorvaldson LLP	Partial evidence	Winnipeg, MB, Canada	201-500	49 contacts →
	Partial evidence “Aikins is a leading Winnipeg business law firm with over 90 lawyers.” Source: RevenueBase Database · checked Aug 31, 2026
6	Walsh LLP	Indirect evidence	Calgary, AB, Canada	51-200	47 contacts →
	Indirect evidence “Walsh LLP offers a full range of legal services from preparing agreements to providing advisory services to acting as your advocate in courts and tribunals.” Source: RevenueBase Database · checked Aug 31, 2026
7	Cavalluzzo LLP	Indirect evidence	Toronto, ON, Canada	51-200	44 contacts →
	Indirect evidence “Cavalluzzo lawyers are distinguished by their commitment to providing excellent legal advice and representation and their dedication to advancing equality and social justice.” Source: RevenueBase Database · checked Aug 31, 2026
8	LMS Lawyers LLP	Partial evidence	Kanata, ON, Canada	11-50	37 contacts →
	Partial evidence “For over thirty-five years, LMS Lawyers has remained a leading full-service law firm serving Eastern Ontario, with its headquarters in Ottawa.” Source: RevenueBase Database · checked Aug 31, 2026
9	Prowse Barrette LLP	Partial evidence	Edmonton, AB, Canada	11-50	36 contacts →
	Partial evidence “Prowse Barrette LLP (formerly Prowse Chowne LLP) has built and sustained a reputation for excellence and leadership in many areas of law over the past half century.” Source: RevenueBase Database · checked Aug 31, 2026
10	Riendeau Avocats	Indirect evidence	Montreal, QC, Canada	11-50	31 contacts →
	Indirect evidence “Riendeau Avocats est un cabinet d’avocat spécialisé en défense criminelle, en droit pénal, familial et en droit de l’immigration à Montréal.” Source: RevenueBase Database · checked Aug 31, 2026
11	Duncan, Linton LLP	Partial evidence	Waterloo, ON, Canada	11-50	30 contacts →
	Partial evidence “Duncan, Linton LLP is a full-service law firm offering clients a wide range of assistance in multiple practice areas.” Source: RevenueBase Database · checked Aug 31, 2026
12	Cook Roberts LLP	Indirect evidence	Victoria, BC, Canada	11-50	23 contacts →
	Indirect evidence “The Expertise to Solve Your Legal Problems: At Cook Roberts LLP, your lawyers deliver your solutions.” Source: RevenueBase Database · checked Aug 31, 2026
13	Speigel Nichols FOX LLP	Partial evidence	Mississauga, ON, Canada	11-50	21 contacts →
	Partial evidence “Speigel Nichols Fox LLP is a boutique commercial litigation law firm with additional expertise in business law matters, including commercial transactions, commercial real estate…” Source: RevenueBase Database · checked Aug 31, 2026
14	Dewart Gleason LLP	Partial evidence	Toronto, ON, Canada	11-50	20 contacts →
	Partial evidence “Fierce Advocates Dewart Gleason LLP is a boutique litigation law firm in Toronto focusing on civil litigation, labour law, the protection of civil liberties, defence of lawyers…” Source: RevenueBase Database · checked Aug 31, 2026
15	Gauthier Bédard Avocats INC	Indirect evidence	Chicoutimi, QC, Canada	11-50	20 contacts →
	Indirect evidence “Le cabinet d’avocats Gauthier Bédard a été fondé en 1932.” Source: RevenueBase Database · checked Aug 31, 2026
16	Brimage LAW Group	Partial evidence	Port Rowan, ON, Canada	11-50	18 contacts →
	Partial evidence “Our multi-practice law firm is comprised of a highly valued and dedicated support staff, as well as an abundance of talented lawyers whose specialties and legal experience are as…” Source: RevenueBase Database · checked Aug 31, 2026
17	Velletta Pedersen Christie Lawyers	Indirect evidence	Victoria, BC, Canada	11-50	18 contacts →
	Indirect evidence “Velletta Pedersen Christie's lawyers are based in beautiful Victoria, British Columbia, Canada.” Source: RevenueBase Database · checked Aug 31, 2026
18	Lakes, Whyte LLP	Indirect evidence	North Vancouver, BC, Canada	11-50	17 contacts →
	Indirect evidence “We believe there are two things that define our firm: Being proud of where we come from and wanting the best possible outcome for our clients.” Source: RevenueBase Database · checked Aug 31, 2026
19	Matlow, Miller, Cummins, Thrasher, LLP	Indirect evidence	Cambridge, ON, Canada	11-50	15 contacts →
	Indirect evidence “Matlow, Miller, Cummins, Thrasher LLP, is proud of our tradition of excellence.” Source: RevenueBase Database · checked Aug 31, 2026
20	Grey Casgrain S.E.N.C.	Indirect evidence	Montreal, QC, Canada	11-50	15 contacts →
	Indirect evidence “Grey Casgrain est un cabinet boutique de litige.” Source: RevenueBase Database · checked Aug 31, 2026
21	Duboff Edwards Schachter LAW Corporation	Indirect evidence	Winnipeg, MB, Canada	11-50	14 contacts →
	Indirect evidence Source: RevenueBase Database · checked Aug 31, 2026
22	Chenette, Boutique DE Litige INC	Partial evidence	Montreal, QC, Canada	11-50	13 contacts →
	Partial evidence “For 20 years, we have championed personalized and effective legal services in the fields of disciplinary law, illegal termination, insurance, civil liability and freedom of speech.” Source: RevenueBase Database · checked Aug 31, 2026
23	George Murray Shipley Bell, LLP	Partial evidence	Sarnia, ON, Canada	11-50	13 contacts →
	Partial evidence “When it comes to professional legal representation and support, choose the leading local team of law professionals at George, Murray, Shipley, Bell, LLP.” Source: RevenueBase Database · checked Aug 31, 2026
24	Bélanger Paradis Avocats INC	Indirect evidence	Boucherville, QC, Canada	11-50	13 contacts →
	Indirect evidence “Depuis plus de 10 ans, Bélanger Paradis Avocats Inc.” Source: RevenueBase Database · checked Aug 31, 2026
25	Campbell LEA Barristers & Solicitors	Partial evidence	Charlottetown, PE, Canada	11-50	13 contacts →
	Partial evidence “Campbell Lea is a full-service independent law firm located at 65 Water Street in Charlottetown, Prince Edward Island.” Source: RevenueBase Database · checked Aug 31, 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: constitutional 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 constitutional law firms.
Partial evidence: Its own public description names part of constitutional law firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name constitutional 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 198 constitutional law firms based in Canada

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Constitutional law firms based in Canada at a glance

As of Aug 31, 2026

55.4%Verified-email coverage

5.2%Mobile-number coverage

10.7Average contacts per company

1-10Median size (employees)

19.7%Largest-city concentration · Toronto

Aug 31, 2026Page data refreshed

Companies by employee count

1-10

135

11-50

51-200

201-500

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 constitutional 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 “constitutional 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 constitutional 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 constitutional 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, 1,170 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 August 31, 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.

Constitutional law firms by metro

Constitutional law firms in Toronto39

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 constitutional 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 constitutional law firms are there based in Canada?

RevenueBase identified 198 constitutional law firms headquartered in Canada as of August 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 Kitchener, tops this list with the largest team on record.

Which city has the most constitutional law firms?

Toronto leads with 39 headquartered companies, followed by Montreal (18) and Edmonton (12).

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 1,170 verified decision-maker contacts tracked across these 198 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on August 31, 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.