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The 30 largest professional services firms in Toronto

Tamtam tracks 117 professional services firms headquartered in Toronto. This list ranks the 30 largest by number of employees on LinkedIn, led by Colliers, RBC Capital Markets and KPMG Canada. Their median headcount is 1,707. Half of them were founded in 1951 or later.

πŸ‡¨πŸ‡¦ Toronto30 companiesUpdated Nov 11, 2026

This selection of professional services firms in Toronto includes companies across financial services, law, real estate, and advertising. Companies like Colliers offer real estate services and investment management, while RBC Capital Markets provides global investment banking expertise. KPMG Canada delivers audit, tax, and advisory services, and Other.β„’ specializes in paid media and performance creative.

A clear pattern among these firms is their substantial size, with many employing thousands of professionals. For instance, Colliers has 29,561 employees, and RBC Capital Markets has 11,098. The list also features prominent legal firms such as Fasken and Borden Ladner Gervais LLP, reflecting a strong presence of legal and financial advisory services in Toronto.

#CompanyIndustryHeadquarters EmployeesFounded
1
Collierscolliers.com

Offers real estate services, engineering solutions, and investment management, focusing on client success and delivering strong financial returns.

Real Estate πŸ‡¨πŸ‡¦ Toronto 29,561 n/a
2
RBC Capital Marketsrbccm.com

Global investment bank providing specialized expertise in capital markets, banking, and finance to corporations, institutional investors, asset managers, and governments across international markets.

Investment Banking πŸ‡¨πŸ‡¦ Toronto 11,098 n/a
3
KPMG Canadakpmg.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 n/a
4
Other.β„’weareother.ca

Specialized paid media and performance creative agency helping marketers optimize media spend, achieve targets, and outperform competition with proven methodologies and successful campaigns

Advertising Services πŸ‡¨πŸ‡¦ Toronto 9,168 2015
5
PwC Canadapwc.com

Delivering audit assurance, risk management, tax, and consulting services to build trust and solve complex business problems through collective industry expertise.

Business Consulting and Services πŸ‡¨πŸ‡¦ Toronto 5,523 n/a
6
BMO Capital Marketscapitalmarkets.bmo.com

A leading North American financial services provider offering a complete range of investment and corporate banking products to clients worldwide

Investment Banking πŸ‡¨πŸ‡¦ Toronto 5,451 n/a
7
Avison Youngavisonyoung.us

Global real estate advisor creating value through collective intelligence, creativity, and agile thinking, with a focus on making a positive impact on people's lives

Real Estate πŸ‡¨πŸ‡¦ Toronto 3,517 n/a
8
Softchoicesoftchoice.com

IT solutions provider enabling organizations to be agile and innovative, move to the cloud, create smarter workplaces, and make informed technology decisions for success

IT Services and IT Consulting πŸ‡¨πŸ‡¦ Toronto 2,839 1989
9
Livingston Internationallivingstonintl.com

Providing customs brokerage, trade consulting, global trade management, freight forwarding, and innovative automation technology solutions worldwide for businesses.

International Trade and Development πŸ‡¨πŸ‡¦ Toronto 2,735 1945
10
LABORATORYwearelaboratory.com

A full-service agency creating innovative marketing solutions without boundaries, collaborating closely with forward-thinking brands to deliver impactful strategies and designs

Advertising Services πŸ‡¨πŸ‡¦ Toronto 2,731 2016
11
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

Law Practice πŸ‡¨πŸ‡¦ Toronto 2,458 n/a
12
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
13
McCarthy TΓ©traultmccarthy.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
14
Klickklick.com

An independent commercialization partner for life sciences brands, focused on developing, launching, and supporting brands to maximize market potential globally

Advertising Services πŸ‡¨πŸ‡¦ Toronto 2,006 1997
15
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

Law Practice πŸ‡¨πŸ‡¦ Toronto 1,707 1862

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16
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

Law Practice πŸ‡¨πŸ‡¦ Toronto 1,686 1856
17
Tundra Technical Solutionstundratechnical.com

Global provider of staffing solutions, focusing on understanding client and candidate needs to deliver top talent for the right role worldwide

Staffing and Recruiting πŸ‡¨πŸ‡¦ Toronto 1,679 2004
18
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

Law Practice πŸ‡¨πŸ‡¦ Toronto 1,572 n/a
19
Stikeman Elliott LLPstikeman.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
20
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

Law Practice πŸ‡¨πŸ‡¦ Toronto 1,415 1957
21
Kinectricskinectrics.com

Integrated lifecycle management services for electric power industry worldwide Testing, inspection, certification, engineering consulting, and maintenance services to ensure safe and efficient utility asset performance

Utilities πŸ‡¨πŸ‡¦ Toronto 1,361 1912
22
Procomprocomservices.com

A leading staffing and contract workforce provider with 18 offices in North America, offering award-winning services to Fortune 500 clients

IT Services and IT Consulting πŸ‡¨πŸ‡¦ Toronto 1,287 1978
23
Dillon Consulting Limiteddillon.ca

A Canadian employee-owned consulting firm specializing in planning, engineering, environmental science, and management, providing innovative solutions for complex projects

Business Consulting and Services πŸ‡¨πŸ‡¦ Toronto 1,256 1946
24
CONTAX Inc.contax.com

Providing SAP system implementation, support, and maintenance services with a focus on quality, reliability, and customer business growth.

IT Services and IT Consulting πŸ‡¨πŸ‡¦ Toronto 1,227 1991
25
Randstad Canadarandstad.ca

This company is a Canadian leader in recruitment and HR, focusing on delivering HR innovation with a people-first, human approach

Staffing and Recruiting πŸ‡¨πŸ‡¦ Toronto 1,203 1997
26
Drake Internationaldrakeintl.com

A global leader in flexible and permanent staffing, offering talent management solutions to maximize human capital assets and increase organizational bottom line

Human Resources Services πŸ‡¨πŸ‡¦ Toronto 1,189 1951
27
Torys LLPtorys.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
28
Canaccord Genuity Group Inc.canaccordgenuity.com

A leading independent financial services firm offering wealth management and capital markets services globally to individual, institutional, and corporate clients

Financial Services πŸ‡¨πŸ‡¦ Toronto 987 1950
29
NORRnorr.com

Employee-owned A&E firm with 800 professionals in various sectors across multiple countries, focusing on purpose-driven design for sustainable and inclusive spaces

Architecture and Planning πŸ‡¨πŸ‡¦ Toronto 947 1938
30
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

Law Practice πŸ‡¨πŸ‡¦ Toronto 935 1903

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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.

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