This list features large law firms in Canada, predominantly based in Toronto, with a focus on business law and corporate services. Many of these firms have a long history, with several founded in the mid-19th to early 20th centuries.
Key firms include Fasken, an international law firm with over 950 lawyers; Borden Ladner Gervais LLP (BLG), a Canadian firm offering bilingual services; McCarthy Tétrault, providing a wide range of legal services to Canadian and international clients; and Osler, Hoskin & Harcourt LLP, advising on domestic and cross-border legal issues. The concentration of these large legal practices in Toronto indicates its prominence as a legal and business hub within Canada.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
KPMG Canadakpmg.com
Providing audit, tax, and advisory services to public, private, nonprofit, and public sector organizations across Canada with professionalism. |
10,017 | |||
| 2 |
Faskenfasken.com
An international law firm with over 950 lawyers and offices on three continents, providing practical legal services for complex business and litigation challenges |
2,458 | |||
| 3 |
Borden Ladner Gervais LLP (BLG)blg.com
A Canadian law firm offering bilingual services in common and civil law, with a national presence and global reach through an international network Contributing to communities through pro bono work and charitable initiatives |
2,290 | |||
| 4 |
McCarthy Tétraultmccarthy.ca
Canadian-based law firm offering a wide range of legal services to Canadian and international clients, with expertise in business law, litigation, tax, real estate, and labor law |
2,088 | |||
| 5 |
Osler, Hoskin & Harcourt LLPosler.com
providing business law advice and counsel to Canadian, U.S., and international clients on domestic and cross-border legal issues |
1,707 | |||
| 6 |
Blake, Cassels & Graydon LLPblakes.com
A top Canadian business law firm providing exceptional legal services to leading businesses in Canada and globally, with a focus on client relationships and expertise |
1,686 | |||
| 7 |
Gowling WLG Canadagowlingwlg.com
International legal organization formed through the merger of a Canadian and UK-based law firm, offering specialized legal services across 18 global locations |
1,572 | |||
| 8 |
Stikeman Elliott LLPstikeman.com
A global leader in Canadian business law, providing legal services and creative solutions in various practice areas to clients worldwide |
1,564 | |||
| 9 |
Miller Thomson LLPmillerthomson.com
National business law firm with 525 lawyers in Canada offering litigation, mergers and acquisitions, corporate finance, tax, real estate, labor & employment services |
1,415 | |||
| 10 |
Bennett Jonesbennettjones.com
An internationally recognized Canadian law firm with over 500 lawyers, specializing in various sectors such as mergers and acquisitions, energy, finance, litigation, and public policy |
1,184 | |||
| 11 | 1,106 | ||||
| 12 |
Legal Aid Ontariolegalaid.on.ca
Legal Aid Ontario provides high-quality legal services to low-income individuals, including advice, duty counsel representation, and funding for complex cases |
1,063 | |||
| 13 |
Dye & Durham Corporationdyedurham.com
Provider of practice management solutions for legal professionals, data insights for corporate transactions, and payments infrastructure for government and financial institutions across multiple countries |
945 | |||
| 14 |
McMillan LLPmcmillan.ca
A national business law firm in Canada specializing in transportation, technology, infrastructure, natural resources, energy, cross-border transactions, private equity, real estate, and regulatory disputes |
935 | |||
| 15 |
Cassels Brock & Blackwell LLPcassels.com
A leading Canadian law practice specializing in business law, serving clients ranging from start-ups to multinational corporations with practical and flexible legal solutions |
874 | |||
| 16 |
Davies Ward Phillips & Vineberg LLPdwpv.com
A leading Canadian business law firm specializing in high-stakes matters, providing clarity, speed, and effective solutions for complex deals and cases Offices in Toronto, Montréal, and New York |
807 | |||
| 17 |
Law Society of Ontariolso.ca
Regulating, licensing, and disciplining lawyers and paralegals in Ontario to ensure high standards of learning, competence, and professional conduct |
788 | |||
| 18 | 761 | ||||
| 19 |
Aird & Berlis LLPairdberlis.com
Legal counsel with a business perspective for clients conducting business in Canada or abroad, with strong relationships and expertise in various industries |
643 | |||
| 20 |
McInnes Coopermcinnescooper.com
A leading law firm in Canada with over 200 lawyers, offering strategic counsel, legal services, and global expertise through a global network |
621 | |||
| 21 |
Stewart McKelveystewartmckelvey.com
A leading law firm in Atlantic Canada providing innovative legal advice, solutions for business challenges, risk mitigation, and identifying new opportunities |
616 | |||
| 22 | 597 | ||||
| 23 |
Cain Lamarrecainlamarre.ca
Providing high-quality legal services across Quebec with a client-centered approach, strong principles, and a commitment to achieving client goals. |
547 | |||
| 24 |
Goodmans LLPgoodmans.ca
A leading Canadian law firm with expertise in business law, litigation, public/private sectors, providing innovative solutions for clients' success |
520 | |||
| 25 |
Smart & Biggarsmartbiggar.ca
Leading Canadian firm specializing in intellectual property law with a team of over 100 lawyers, patent agents, and trademark agents providing top-quality advisory services and successful IP litigation outcomes |
505 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 26 |
Canadian Medical Protective Associationcmpa-acpm.ca
A leading provider of medical liability protection and professional development for Canadian physicians, offering risk management education and legal advice |
481 | |||
| 27 |
Lawson Lundell LLPlawsonlundell.com
A leading Canadian business law firm offering practical and strategic solutions to legal and business issues, with a strong commitment to community initiatives |
481 | |||
| 28 |
Cox & Palmercoxandpalmerlaw.com
A full-service team of 200 lawyers providing expert legal advice to individuals and businesses in Atlantic Canada across various industries |
474 | |||
| 29 |
Lerners LLPlerners.ca
Law firm with over 100 lawyers offering expertise in various practice areas, known for handling complex cases, creating new law, and delivering positive outcomes for clients |
464 | |||
| 30 |
Langlois Avocatslanglois.ca
Leading independent law firm in Quebec with over 175 lawyers offering high-quality legal services in various areas such as construction, energy, life sciences, and more |
382 | |||
| 31 |
Barreau du Québecbarreau.qc.ca
The company ensures public protection by fostering trust between lawyers, the public, and the state through monitoring, promoting legal primacy, and supporting members |
353 | |||
| 32 |
Therrien Couture Joli-Coeurgroupetcj.ca
A multidisciplinary team supports clients and partners with a collaborative, innovative, and value-creating approach, focusing on commitment, audacity, simplicity, and relevance |
338 | |||
| 33 |
Field Lawfieldlaw.com
Western and northern regional law firm with over 100 years of experience, offering legal counsel to diverse clients and engaging in community initiatives |
337 | |||
| 34 |
Demers Beaulne LLPdemersbeaulne.com
A chartered accountants firm founded in 1979 in Montreal offering audit, due diligence, review, accounting, taxation, financial, and organizational services |
327 | |||
| 35 |
Blaney McMurtry LLPblaney.com
A premier law firm in Toronto's financial district, specializing in litigation, real estate, and business law with a focus on delivering efficient and practical legal services |
327 | |||
| 36 |
Tribunals Ontario I Tribunaux décisionnels Ontariotribunalsontario.ca
Group of 13 adjudicative tribunals in Ontario providing fair and accessible dispute resolution to thousands of Ontarians, resolving nearly 100,000 cases per year |
284 | |||
| 37 |
Burnet, Duckworth & Palmer LLPbdplaw.com
A boutique law firm in Calgary with innovative legal minds, specializing in corporate and litigation matters for clients in various sectors |
267 | |||
| 38 |
LexisNexis Canadalexisnexis.com
Leading global provider of information and technology solutions for legal, corporate, tax, and government professionals, focusing on innovation, comprehensive content, and workflow efficiency |
225 | |||
| 39 |
Green and Spiegelgands.com
A boutique immigration law firm with offices in multiple locations, specializing in all categories of North American immigration law for over 40 years |
222 | |||
| 40 |
Gardiner Roberts LLPgrllp.com
Established in the 1920s, we are a mid-sized law firm serving diverse clients including banks, municipalities, tech companies, and real estate developers |
213 | |||
| 41 |
De Grandpré Chaitdgchait.com
Established for 90 years, specializing in real estate, business, construction, taxation, litigation, municipal law, insolvency, and restructuring with tailored solutions for clients |
209 | |||
| 42 |
Heenan Blaikieadamdodek.ca
A leading Canadian law firm with a national presence and international offices, announcing a wind-up after over 40 years of operation |
184 | |||
| 43 |
Stein Monaststeinmonast.ca
A team of over 70 legal professionals operating throughout Quebec, specializing in various areas of law to serve clients effectively |
182 | |||
| 44 |
Harrison Pensa LLPharrisonpensa.com
A full-service law firm based in London, Ontario, specializing in litigation, business law, real estate, family, wills and estates, and personal injury law |
181 | |||
| 45 |
Fraser Milner Casgrain LLPdentons.com
A global law firm formed by the merger of Salans LLP, Fraser Milner Casgrain LLP, and SNR Denton, focused on providing clients a competitive edge worldwide |
181 | |||
| 46 |
Stratagem IPM Limitedstratagemipm.co.uk
Providing strategic advice and management of intellectual property for various industries, with experts delivering clear and decisive action over mere opinions |
39 | |||
| 47 |
Simplex Legalsimplexlegal.ca
Innovative virtual law firm in Canada providing tech-forward legal support to help legal departments and companies overcome challenges affordably and efficiently |
24 | |||
| 48 |
Centre québécois du droit de l'environnementcqde.org
A Quebec-based charity provides legal expertise and education on environmental law, shapes legislation and case law for environmental protection and justice access |
20 | |||
| 49 |
Chodola Reynolds Bindercrblaw.ca
A law firm in Windsor, Canada since 1973, specializing in civil litigation, insurance defense, real estate, and corporate law with a reputation for excellence and integrity |
7 | |||
| 50 |
Law
Providing tailored legal services with unparalleled client support, focusing on cost-effective solutions and achieving the best outcomes for clients |
6 | |||
Turn this list into pipeline
Tamtam finds the decision-makers at every company on a list like this one, with verified emails, phone numbers and the buying signals that tell you when to reach out.
How this list is built
Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 11, 2026.
More company lists in Canada
- The largest companies in Canada 11,083
- Multinational companies in Canada 1,934
- Manufacturers in Canada 946
- Retail chains in Canada 851
- Critical infrastructure operators in Canada 767
- Public sector organisations in Canada 699
- Financial services firms in Canada 687
- Companies with in-house R&D in Canada 678
- Logistics companies in Canada 593
- Truck Transportation companies in Canada 581
- SaaS companies in Canada 543
- Hardware manufacturers in Canada 502
- Energy companies in Canada 497
- Software Development companies in Canada 484
- Professional services firms in Canada 481
- IT Services and IT Consulting companies in Canada 477
- Transportation, Logistics, Supply Chain and Storage companies in Canada 464
- Distributors and wholesalers in Canada 452
- Financial Services companies in Canada 432
- Healthcare providers in Canada 416
- Construction companies in Canada 391
- Oil and Gas companies in Canada 380
- Companies with a mobile app in Canada 367
- Retail companies in Canada 358