# Law firms headquartered in Canada Tamtam tracks 51 law firms headquartered in Canada. This list ranks the 50 largest by number of employees on LinkedIn, led by KPMG Canada, Fasken and Borden Ladner Gervais LLP (BLG). Their median headcount is 505. Half of them were founded in 1920 or later. The most common headquarters are Toronto (24), Montreal (9) and Calgary (4). 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 TΓ©trault, 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. πŸ‡¨πŸ‡¦ Canada Β· 50 companies Β· Updated Nov 11, 2026 | # | Company | Industry | Headquarters | Employees | Founded | |---|---|---|---|---|---| | 1 | [KPMG Canada](https://www.tamtam.ai/c/kpmg-canada) (kpmg.com)
Providing audit, tax, and advisory services to public, private, nonprofit, and public sector organizations across Canada with professionalism. | Financial Services | πŸ‡¨πŸ‡¦ Toronto | 10,017 | | | 2 | [Fasken](https://www.tamtam.ai/c/fasken) (fasken.com)
An international law firm with over 950 lawyers and offices on three continents, providing practical legal services for complex business and litigation challenges | Law Practice | πŸ‡¨πŸ‡¦ Toronto | 2,458 | | | 3 | [Borden Ladner Gervais LLP (BLG)](https://www.tamtam.ai/c/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 | Law Practice | πŸ‡¨πŸ‡¦ Toronto | 2,290 | 1823 | | 4 | [McCarthy TΓ©trault](https://www.tamtam.ai/c/mccarthy-tetrault) (mccarthy.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 | Law Practice | πŸ‡¨πŸ‡¦ Toronto | 2,088 | 1855 | | 5 | [Osler, Hoskin & Harcourt LLP](https://www.tamtam.ai/c/osler-hoskin-and-harcourt-llp) (osler.com)
providing business law advice and counsel to Canadian, U.S., and international clients on domestic and cross-border legal issues | Law Practice | πŸ‡¨πŸ‡¦ Toronto | 1,707 | 1862 | | 6 | [Blake, Cassels & Graydon LLP](https://www.tamtam.ai/c/blake-cassels-and-graydon-llp) (blakes.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 | Law Practice | πŸ‡¨πŸ‡¦ Toronto | 1,686 | 1856 | | 7 | [Gowling WLG Canada](https://www.tamtam.ai/c/gowling-wlg-canada) (gowlingwlg.com)
International legal organization formed through the merger of a Canadian and UK-based law firm, offering specialized legal services across 18 global locations | Law Practice | πŸ‡¨πŸ‡¦ Toronto | 1,572 | | | 8 | [Stikeman Elliott LLP](https://www.tamtam.ai/c/stikeman-elliott-llp) (stikeman.com)
A global leader in Canadian business law, providing legal services and creative solutions in various practice areas to clients worldwide | Law Practice | πŸ‡¨πŸ‡¦ Toronto | 1,564 | 1952 | | 9 | [Miller Thomson LLP](https://www.tamtam.ai/c/miller-thomson-llp) (millerthomson.com)
National business law firm with 525 lawyers in Canada offering litigation, mergers and acquisitions, corporate finance, tax, real estate, labor & employment services | Law Practice | πŸ‡¨πŸ‡¦ Toronto | 1,415 | 1957 | | 10 | [Bennett Jones](https://www.tamtam.ai/c/bennett-jones) (bennettjones.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 | Law Practice | πŸ‡¨πŸ‡¦ Calgary | 1,184 | 1922 | | 11 | [Torys LLP](https://www.tamtam.ai/c/torys-llp) (torys.com)
Providing superior counsel and client service, our cross-border team offers innovative solutions for clients' toughest problems with regional expertise | Law Practice | πŸ‡¨πŸ‡¦ Toronto | 1,106 | 1941 | | 12 | [Legal Aid Ontario](https://www.tamtam.ai/c/legal-aid-ontario) (legalaid.on.ca)
Legal Aid Ontario provides high-quality legal services to low-income individuals, including advice, duty counsel representation, and funding for complex cases | Law Practice | πŸ‡¨πŸ‡¦ Toronto | 1,063 | | | 13 | [Dye & Durham Corporation](https://www.tamtam.ai/c/dye-and-durham-corporation) (dyedurham.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 | Software Development | πŸ‡¨πŸ‡¦ Toronto | 945 | | | 14 | [McMillan LLP](https://www.tamtam.ai/c/mcmillan-llp) (mcmillan.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 | Law Practice | πŸ‡¨πŸ‡¦ Toronto | 935 | 1903 | | 15 | [Cassels Brock & Blackwell LLP](https://www.tamtam.ai/c/cassels-brock-and-blackwell-llp) (cassels.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 | Law Practice | πŸ‡¨πŸ‡¦ Toronto | 874 | 1888 | | 16 | [Davies Ward Phillips & Vineberg LLP](https://www.tamtam.ai/c/davies-ward-phillips-and-vineberg-llp) (dwpv.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, MontrΓ©al, and New York | Law Practice | πŸ‡¨πŸ‡¦ Toronto | 807 | | | 17 | [Law Society of Ontario](https://www.tamtam.ai/c/law-society-of-ontario) (lso.ca)
Regulating, licensing, and disciplining lawyers and paralegals in Ontario to ensure high standards of learning, competence, and professional conduct | Law Practice | πŸ‡¨πŸ‡¦ Toronto | 788 | 1797 | | 18 | [BCF](https://www.tamtam.ai/c/bcf) (bcf.ca)
Leading team of over 500 professionals providing innovative solutions for businesses in Quebec and beyond, recognized as Canada's Best Managed for 12 years | Law Practice | πŸ‡¨πŸ‡¦ Montreal | 761 | 1995 | | 19 | [Aird & Berlis LLP](https://www.tamtam.ai/c/aird-and-berlis-llp) (airdberlis.com)
Legal counsel with a business perspective for clients conducting business in Canada or abroad, with strong relationships and expertise in various industries | Law Practice | πŸ‡¨πŸ‡¦ Toronto | 643 | 1919 | | 20 | [McInnes Cooper](https://www.tamtam.ai/c/mcinnes-cooper) (mcinnescooper.com)
A leading law firm in Canada with over 200 lawyers, offering strategic counsel, legal services, and global expertise through a global network | Law Practice | πŸ‡¨πŸ‡¦ Halifax | 621 | 1859 | | 21 | [Stewart McKelvey](https://www.tamtam.ai/c/stewart-mckelvey) (stewartmckelvey.com)
A leading law firm in Atlantic Canada providing innovative legal advice, solutions for business challenges, risk mitigation, and identifying new opportunities | Law Practice | πŸ‡¨πŸ‡¦ Halifax | 616 | | | 22 | [Lavery](https://www.tamtam.ai/c/lavery) (lavery.ca)
Leading independent law firm providing personalized and innovative legal solutions to domestic and international organizations in Quebec with a team of 250 professionals | Law Practice | πŸ‡¨πŸ‡¦ Montreal | 597 | 1913 | | 23 | [Cain Lamarre](https://www.tamtam.ai/c/cain-lamarre) (cainlamarre.ca)
Providing high-quality legal services across Quebec with a client-centered approach, strong principles, and a commitment to achieving client goals. | Law Practice | πŸ‡¨πŸ‡¦ Quebec City | 547 | 1877 | | 24 | [Goodmans LLP](https://www.tamtam.ai/c/goodmans-llp) (goodmans.ca)
A leading Canadian law firm with expertise in business law, litigation, public/private sectors, providing innovative solutions for clients' success | Law Practice | πŸ‡¨πŸ‡¦ Toronto | 520 | | | 25 | [Smart & Biggar](https://www.tamtam.ai/c/smart-and-biggar) (smartbiggar.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 | Law Practice | πŸ‡¨πŸ‡¦ Ottawa | 505 | 1890 | | 26 | [Canadian Medical Protective Association](https://www.tamtam.ai/c/canadian-medical-protective-association) (cmpa-acpm.ca)
A leading provider of medical liability protection and professional development for Canadian physicians, offering risk management education and legal advice | Hospitals and Health Care | πŸ‡¨πŸ‡¦ Ottawa | 481 | 1901 | | 27 | [Lawson Lundell LLP](https://www.tamtam.ai/c/lawson-lundell-llp) (lawsonlundell.com)
A leading Canadian business law firm offering practical and strategic solutions to legal and business issues, with a strong commitment to community initiatives | Law Practice | πŸ‡¨πŸ‡¦ Vancouver | 481 | 1886 | | 28 | [Cox & Palmer](https://www.tamtam.ai/c/cox-and-palmer) (coxandpalmerlaw.com)
A full-service team of 200 lawyers providing expert legal advice to individuals and businesses in Atlantic Canada across various industries | Law Practice | πŸ‡¨πŸ‡¦ Halifax | 474 | 1888 | | 29 | [Lerners LLP](https://www.tamtam.ai/c/lerners-llp) (lerners.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 | Law Practice | πŸ‡¨πŸ‡¦ London | 464 | 1929 | | 30 | [Langlois Avocats](https://www.tamtam.ai/c/langlois-avocats) (langlois.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 | Law Practice | πŸ‡¨πŸ‡¦ Montreal | 382 | 1916 | | 31 | [Barreau du QuΓ©bec](https://www.tamtam.ai/c/barreau-du-quebec) (barreau.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 | Legal Services | πŸ‡¨πŸ‡¦ Montreal | 353 | 1849 | | 32 | [Therrien Couture Joli-Coeur](https://www.tamtam.ai/c/therrien-couture-joli-coeur) (groupetcj.ca)
A multidisciplinary team supports clients and partners with a collaborative, innovative, and value-creating approach, focusing on commitment, audacity, simplicity, and relevance | Law Practice | πŸ‡¨πŸ‡¦ Montreal | 338 | 1994 | | 33 | [Field Law](https://www.tamtam.ai/c/field-law) (fieldlaw.com)
Western and northern regional law firm with over 100 years of experience, offering legal counsel to diverse clients and engaging in community initiatives | Legal Services | πŸ‡¨πŸ‡¦ Edmonton | 337 | 1915 | | 34 | [Demers Beaulne LLP](https://www.tamtam.ai/c/demers-beaulne-llp) (demersbeaulne.com)
A chartered accountants firm founded in 1979 in Montreal offering audit, due diligence, review, accounting, taxation, financial, and organizational services | Accounting | πŸ‡¨πŸ‡¦ Montreal | 327 | 1979 | | 35 | [Blaney McMurtry LLP](https://www.tamtam.ai/c/blaney-mcmurtry-llp) (blaney.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 | Law Practice | πŸ‡¨πŸ‡¦ Toronto | 327 | 1954 | | 36 | [Tribunals Ontario I Tribunaux dΓ©cisionnels Ontario](https://www.tamtam.ai/c/tribunals-ontario-i-tribunaux-decisionnels-ontario) (tribunalsontario.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 | Government Administration | πŸ‡¨πŸ‡¦ Toronto | 284 | 2019 | | 37 | [Burnet, Duckworth & Palmer LLP](https://www.tamtam.ai/c/burnet-duckworth-and-palmer-llp) (bdplaw.com)
A boutique law firm in Calgary with innovative legal minds, specializing in corporate and litigation matters for clients in various sectors | Legal Services | πŸ‡¨πŸ‡¦ Calgary | 267 | | | 38 | [LexisNexis Canada](https://www.tamtam.ai/c/lexisnexis-canada) (lexisnexis.com)
Leading global provider of information and technology solutions for legal, corporate, tax, and government professionals, focusing on innovation, comprehensive content, and workflow efficiency | IT Services and IT Consulting | πŸ‡¨πŸ‡¦ Toronto | 225 | | | 39 | [Green and Spiegel](https://www.tamtam.ai/c/green-and-spiegel) (gands.com)
A boutique immigration law firm with offices in multiple locations, specializing in all categories of North American immigration law for over 40 years | Legal Services | πŸ‡¨πŸ‡¦ Toronto | 222 | 1962 | | 40 | [Gardiner Roberts LLP](https://www.tamtam.ai/c/gardiner-roberts-llp) (grllp.com)
Established in the 1920s, we are a mid-sized law firm serving diverse clients including banks, municipalities, tech companies, and real estate developers | Law Practice | πŸ‡¨πŸ‡¦ Toronto | 213 | 1920 | | 41 | [De GrandprΓ© Chait](https://www.tamtam.ai/c/de-grandpre-chait) (dgchait.com)
Established for 90 years, specializing in real estate, business, construction, taxation, litigation, municipal law, insolvency, and restructuring with tailored solutions for clients | Legal Services | πŸ‡¨πŸ‡¦ Montreal | 209 | 1928 | | 42 | [Heenan Blaikie](https://www.tamtam.ai/c/heenan-blaikie) (adamdodek.ca)
A leading Canadian law firm with a national presence and international offices, announcing a wind-up after over 40 years of operation | Law Practice | πŸ‡¨πŸ‡¦ Montreal | 184 | 1973 | | 43 | [Stein Monast](https://www.tamtam.ai/c/stein-monast) (steinmonast.ca)
A team of over 70 legal professionals operating throughout Quebec, specializing in various areas of law to serve clients effectively | Legal Services | πŸ‡¨πŸ‡¦ Quebec City | 182 | | | 44 | [Harrison Pensa LLP](https://www.tamtam.ai/c/harrison-pensa-llp) (harrisonpensa.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 | Law Practice | πŸ‡¨πŸ‡¦ London | 181 | 1999 | | 45 | [Fraser Milner Casgrain LLP](https://www.tamtam.ai/c/fraser-milner-casgrain-llp) (dentons.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 | Law Practice | πŸ‡¨πŸ‡¦ Toronto | 181 | 1839 | | 46 | [Stratagem IPM Limited](https://www.tamtam.ai/c/stratagem-ipm-limited) (stratagemipm.co.uk)
Providing strategic advice and management of intellectual property for various industries, with experts delivering clear and decisive action over mere opinions | Law Practice | πŸ‡¨πŸ‡¦ Toft | 39 | 1999 | | 47 | [Simplex Legal](https://www.tamtam.ai/c/simplex-legal) (simplexlegal.ca)
Innovative virtual law firm in Canada providing tech-forward legal support to help legal departments and companies overcome challenges affordably and efficiently | Legal Services | πŸ‡¨πŸ‡¦ Calgary | 24 | 2012 | | 48 | [Centre quΓ©bΓ©cois du droit de l'environnement](https://www.tamtam.ai/c/centre-quebecois-du-droit-de-l-environnement) (cqde.org)
A Quebec-based charity provides legal expertise and education on environmental law, shapes legislation and case law for environmental protection and justice access | Legal Services | πŸ‡¨πŸ‡¦ Montreal | 20 | 1989 | | 49 | [Chodola Reynolds Binder](https://www.tamtam.ai/c/chodola-reynolds-binder) (crblaw.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 | Law Practice | πŸ‡¨πŸ‡¦ Windsor | 7 | 1973 | | 50 | [Law](https://www.tamtam.ai/c/law)
Providing tailored legal services with unparalleled client support, focusing on cost-effective solutions and achieving the best outcomes for clients | Law Practice | πŸ‡¨πŸ‡¦ Calgary | 6 | 2017 | ## 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](https://www.tamtam.ai/l/largest-companies-canada) (11,083) - [Multinational companies in Canada](https://www.tamtam.ai/l/multinational-companies-canada) (1,934) - [Manufacturers in Canada](https://www.tamtam.ai/l/manufacturers-canada) (946) - [Retail chains in Canada](https://www.tamtam.ai/l/retail-chains-canada) (851) - [Critical infrastructure operators in Canada](https://www.tamtam.ai/l/critical-infrastructure-operators-canada) (767) - [Public sector organisations in Canada](https://www.tamtam.ai/l/public-sector-organisations-canada) (699) - [Financial services firms in Canada](https://www.tamtam.ai/l/financial-services-firms-canada) (687) - [Companies with in-house R&D in Canada](https://www.tamtam.ai/l/r-and-d-companies-canada) (678) - [Logistics companies in Canada](https://www.tamtam.ai/l/logistics-companies-canada) (593) - [Truck Transportation companies in Canada](https://www.tamtam.ai/l/truck-transportation-companies-canada) (581) - [SaaS companies in Canada](https://www.tamtam.ai/l/saas-companies-canada) (543) - [Hardware manufacturers in Canada](https://www.tamtam.ai/l/hardware-companies-canada) (502) - [Energy companies in Canada](https://www.tamtam.ai/l/energy-companies-canada) (497) - [Software Development companies in Canada](https://www.tamtam.ai/l/software-development-companies-canada) (484) - [Professional services firms in Canada](https://www.tamtam.ai/l/professional-services-firms-canada) (481) - [IT Services and IT Consulting companies in Canada](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-canada) (477) - [Transportation, Logistics, Supply Chain and Storage companies in Canada](https://www.tamtam.ai/l/transportation-logistics-supply-chain-and-storage-companies-canada) (464) - [Distributors and wholesalers in Canada](https://www.tamtam.ai/l/distributors-and-wholesalers-canada) (452) - [Financial Services companies in Canada](https://www.tamtam.ai/l/financial-services-companies-canada) (432) - [Healthcare providers in Canada](https://www.tamtam.ai/l/healthcare-providers-canada) (416) - [Construction companies in Canada](https://www.tamtam.ai/l/construction-companies-canada) (391) - [Oil and Gas companies in Canada](https://www.tamtam.ai/l/oil-and-gas-companies-canada) (380) - [Companies with a mobile app in Canada](https://www.tamtam.ai/l/companies-with-mobile-app-canada) (367) - [Retail companies in Canada](https://www.tamtam.ai/l/retail-companies-canada) (358) ## The same list elsewhere in Canada - [Law firms in Ontario](https://www.tamtam.ai/l/law-firms-ontario) (30) - [Law firms in Toronto](https://www.tamtam.ai/l/law-firms-toronto) (25) --- Source: https://www.tamtam.ai/l/law-firms-canada