| # | Company | Employees |
|---|---|---|
| 1 |
Bellletstalk.bell.ca
A leading Canadian communications company offering advanced wireless, internet, TV, media, and business services, as well as supporting social and economic prosperity |
34,053 |
| 2 |
National Bank of Canadabnc.ca
Financial institution focusing on personal and business financial advice, community empowerment, innovation, and building lasting client relationships. |
19,342 |
| 3 |
Hydro Québechydroquebec.com
Production, transmission, and distribution of electricity primarily from renewable hydroelectric sources, including research and technology development in energy efficiency. |
16,160 |
| 4 | 12,816 | |
| 5 |
Santé Québec Centre-Sud-de-l’Île-de-Montréal – Universitaireciusss-centresudmtl.gouv.qc.ca
The CIUSSS of Centre-South of Montreal provides healthcare and social services to nearly 300,000 Montreal residents, with a focus on various specialties and research |
5,068 |
| 6 |
Centre universitaire de santé McGill | McGill University Health Centrecusm.ca
An internationally recognized academic health institution providing excellent clinical programs, research, and teaching to advance patient care and knowledge in healthcare |
4,668 |
| 7 |
CHUM - Centre hospitalier de l'Université de Montréalchumontreal.qc.ca
Provides general, specialized, and highly specialized care to adult patients, conducts research, offers teaching, and promotes health to 40% of Quebec's population. |
4,507 |
| 8 |
Cogeco Inc.corpo.cogeco.com
Provides internet, video, and phone services to residential and business customers in Canada and the United States, plus operates radio stations. |
4,305 |
| 9 |
Société de transport de Montréalstm.info
The STM plays a vital role in the public transportation sector, providing reliable and sustainable travel options for over 14 million daily commuters in Montreal |
3,773 |
| 10 |
CIUSSS du Nord-de-l'île-de-Montréalciusssnordmtl.ca
A healthcare organization providing services to over 450,000 residents in Montreal and specialized care to 18 million Quebecers, focusing on research, education, and innovation in health |
3,376 |
| 11 |
CIUSSS de l'Est-de-l'Île-de-Montréalciusss-estmtl.gouv.qc.ca
The integrated university health and social services center in East Montreal manages multiple hospitals and mental health institute, affiliated with University of Montreal |
3,232 |
| 12 |
Laurentian Bankbanquelaurentienne.ca
Provides retail banking, specialized SME and real estate financing, brokerage services, and investment products through subsidiaries and advisors nationwide. |
2,876 |
| 13 |
Air Transatairtransat.com
A leading integrated international tourism company specializing in vacation packages, hotel stays, and air travel to over 60 destinations in the Americas and Europe Committed to sustainable tourism development |
2,686 |
| 14 |
Santé Québec Centre-Ouest-de-l'Île-de-Montréal - Universitaireciussscentreouest.ca
A healthcare network in West-Central Montreal providing seamless care to over 345,000 residents through various member facilities and a large staff of healthcare professionals and doctors |
2,681 |
| 15 |
CHU Sainte-Justinechusj.org
The largest mother-child hospital in Canada, CHU Sainte-Justine employs 5,000 staff and 500 healthcare professionals, prioritizing innovation and patient-centered care |
2,482 |
| 16 |
VIA Rail Canadaviarail.ca
A national passenger rail service in Canada, providing safe, cost-effective, and environmentally responsible travel experiences, connecting over 400 communities with innovative projects |
2,343 |
| 17 |
Cogeco Connexioncogeco.ca
provides fiber-powered internet, TV, and home phone services with local support in smaller cities across Ontario and Quebec. |
1,827 |
| 18 |
Fairstone Bankfairstone.ca
A financial services group providing value-driven solutions for consumers and businesses, focusing on enhancing customer loyalty and delivering confident borrowing experiences |
1,539 |
| 19 |
National Bank Financialnbfwm.ca
A top Canadian securities broker providing wealth management services for individuals, corporations, and governments with nearly 1,000 investment advisors nationwide |
1,427 |
| 20 |
belairdirectbelairdirect.com
A leading insurance company in Canada simplifying the insurance process with innovative products and personalized experiences for over 65 years |
1,421 |
| 21 |
Transattransat.com
An international tourism company that offers vacation packages, hotel stays, and air travel to over 60 destinations in the Americas and Europe with a focus on sustainable tourism |
1,303 |
| 22 |
Santé Québec - Institut de cardiologie de Montréalicm-mhi.org
A highly specialized hospital focusing on cardiology, dedicated to care, research, education, prevention, rehabilitation, and evaluating new technologies in the field |
1,228 |
| 23 |
Énergirenergir.com
Natural gas distribution in Quebec and Vermont, renewable electricity production, energy efficiency, innovative energy projects, and diverse energy services. |
1,194 |
| 24 |
Logisteclogistec.com
provides marine and environmental services across North America with over 3,200 employees serving from the Arctic to the US Gulf |
845 |
| 25 |
Montreal Policespvm.qc.ca
A municipal police force serving Montréal with over 6000 employees, responding to safety needs, managing 32 local stations on the island |
770 |
| 26 |
Quebecorquebecor.com
Leading Canadian integrated communications company combining telecommunications, media, entertainment, publishing, cultural product distribution, event production, and community involvement. |
745 |
| 27 |
Hopital Maisonneuve-Rosemontmaisonneuve-rosemont.org
Medical practice specializing in providing healthcare services located in Montreal, Quebec, Canada |
740 |
| 28 |
Urgences-santéurgences-sante.qc.ca
Public organization providing prehospital emergency medical services and communication for urgent health calls in Montreal and Laval regions. |
719 |
| 29 |
Valero Energy Inc.energievalero.ca
A leading energy company in Quebec with a refinery, logistics infrastructures, supporting local energy security and economy, fostering values and talented employees |
636 |
| 30 |
Exo – Réseau de transport métropolitainexo.quebec
Public transportation provider in Montreal's north and south shores, offering integrated train, bus, and paratransit services focused on innovation and efficient travel experiences |
595 |
| 31 |
Air Inuitairinuit.com
Specializes in providing vital air transport services to remote Inuit communities in northern Quebec, offering passenger, cargo, and emergency flights |
562 |
| 32 |
TFI International Inc.tfiintl.com
A leading transportation and logistics company in North America, specializing in strategic acquisitions and managing a network of operating subsidiaries across the US and Canada |
546 |
| 33 |
Sun Life Québecsunlife.ca
A leading financial services organization offering insurance and investment products in multiple global markets, with a focus on helping clients achieve financial security |
382 |
| 34 |
National Bank Private Banking 1859privatebanking1859.ca
Wealth management firm offering personalized advice and services to affluent individuals and their families, focusing on growth, sustainability, and philanthropy |
101 |
| 35 |
Transport Hervé Lemieuxtransportlemieux.com
Established in 1947, a leading transport company in Quebec offering general, specialized transport services and private fleet management, focusing on customer satisfaction and safety |
93 |
| 36 |
Caisse Desjardins du Centre-nord de Montréaldesjardinscentrenord.com
A financial services company providing tailored solutions for individuals, businesses, and corporations, focusing on innovation, community enrichment, and sustainable development |
39 |
| 37 |
Caisse Desjardins du Centre-est de Montréaldesjardins.com
A financial institution in Montreal's east region with a mission to support economic and social development through personalized business solutions for members and clients |
31 |
| 38 |
IA groupe financieria.ca
Provides financial services to individuals and businesses, offering a range of solutions for managing and optimizing finances |
31 |
| 39 |
Argus Transportargustransport.com
Technology-driven trucking and logistics carrier operating in Canada and the USA since 1977, focusing on customer service and people investment. |
26 |
| 40 |
Caisse Desjardins du Plateau-Mont-Royaldesjardins.com
A leading financial group in Canada dedicated to improving the well-being of individuals and communities through sustainable partnerships and actions |
25 |
| 41 |
Desjardins Business West of Montrealdesjardins.com
A team of 62 professionals offering a comprehensive range of financial services, including business financing, savings management, capital markets, treasury solutions, insurance, investments, and more |
18 |
| 42 |
HYDROMÉGA Services Inc.hydromega.com
Independent renewable energy producer in Quebec and Ontario since 1987, specializing in constructing and operating hydroelectric facilities sold to Hydro-Quebec and Ontario Power Authority |
9 |
| 43 |
HYDROMEGAhydromega.com
A leading renewable power producer and developer in Eastern Canada, established in Québec in 1987 |
8 |
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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 Oct 24, 2026.
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