| # | Company | Employees |
|---|---|---|
| 1 |
Gouvernement du Québec – Carrièresquebec.ca
Employs 60,000 across ministries and agencies, offering diverse careers contributing to Quebec's economy, health, education, and social services. |
36,470 |
| 2 |
Hydro Québechydroquebec.com
Production, transmission, and distribution of electricity primarily from renewable hydroelectric sources, including research and technology development in energy efficiency. |
16,160 |
| 3 |
Ville de Montréalmontreal.ca
City administration focusing on cultural vitality, economic and social development, serving 1.8 million residents with 28,000 employees. |
12,244 |
| 4 |
Université de Montréalumontreal.ca
Leading higher education institution in Quebec with extensive alumni network, affiliated schools, and recognized as a top Canadian employer. |
12,234 |
| 5 |
Université Lavalulaval.ca
This organization is a French-language university that trains individuals, fosters knowledge, promotes change, and contributes to societal advancement through research and development |
9,785 |
| 6 |
Université de Sherbrookeusherbrooke.ca
A French-speaking institution in Canada's Quebec province, Université de Sherbrooke offers recognized academic education to over 40,000 students, including international students |
7,200 |
| 7 |
Environment and Climate Change Canadacanada.ca
Inform Canadians on environmental protection, implement clean growth framework, collaborate with partners, conduct research, develop policies, enforce laws. |
6,865 |
| 8 |
UQAM | Université du Québec à Montréaluqam.ca
A public French-language university known for quality programs, social research, and innovation in creative arts, offering training on campus and regional centers |
6,602 |
| 9 |
Centre de services scolaire de Montréal (CSSDM)cssdm.gouv.qc.ca
Leading educational institution in Montreal, Quebec, providing services for 110,000 students from diverse backgrounds, offering professional growth opportunities and social benefits for employees |
5,681 |
| 10 |
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 |
| 11 |
Revenu Québecrevenuquebec.ca
Government agency responsible for ensuring fair tax collection to fund public services within the Quebec provincial administration. |
4,998 |
| 12 |
Santé Québec Laurentidessantelaurentides.gouv.qc.ca
Health and social services organization with over 100 facilities. Multidisciplinary network of experts, research, and teaching in clinical settings. |
4,971 |
| 13 | 4,739 | |
| 14 | 4,674 | |
| 15 |
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 |
| 16 |
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 |
| 17 |
CIUSSS de la Capitale-Nationaleciusss-capitalenationale.gouv.qc.ca
A healthcare organization in Capitale-Nationale region with over 16,000 employees serving 736,000 citizens, offering general, specialized, research, and education services in health and social services |
4,022 |
| 18 |
Santé Québec Estrie – CHUSsanteestrie.qc.ca
The CIUSSS de l’Estrie – CHUS is a healthcare organization offering a wide range of health and social services to over 500,000 people in Quebec |
4,012 |
| 19 |
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 |
| 20 |
CHU de Québecchudequebec.ca
Leading healthcare institution in Quebec, providing general, specialized, and super-specialized care to nearly two million people Strong focus on education, research, and technological advancements in health |
3,643 |
| 21 |
Commission des normes, de l'équité, de la santé et de la sécurité du travail (CNESST)cnesst.gouv.qc.ca
The CNESST provides employers and workers with integrated expertise on labor standards, pay equity, and health and safety at work |
3,479 |
| 22 |
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 |
| 23 |
CIUSSS de l'Ouest-de-l'Île-de-Montréalciusss-ouestmtl.gouv.qc.ca
The Montréal West Island IUHSSC provides health and social services to a population of 370,000 with over 10,500 employees and a budget of $905M |
3,337 |
| 24 |
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 |
| 25 |
Radio-Canadaici.radio-canada.ca
Radio-Canada is the national public broadcaster of Canada Offering a wide range of radio, TV, internet, and satellite services to Canadians |
3,172 |
| 26 |
CIUSSS Mauricie et Centre-du-Québectravaillerensante.com
A team of 22,000 individuals united by values, dedicated to improving health and well-being through humanism, passion, teamwork, work-life balance, and research |
3,165 |
| 27 |
Centre de services scolaire Marguerite-Bourgeoys - CSSMBcssmb.gouv.qc.ca
A diverse Montreal-based educational network with 52,000 students and over 8,500 employees across 92 establishments in seven Montreal boroughs and 13 municipalities |
3,143 |
| 28 | 3,065 | |
| 29 |
International Civil Aviation Organizationicao.int
A global organization funded by 193 national governments to support diplomacy and cooperation in air transport through research, standardization, and capacity building |
3,016 |
| 30 |
CISSS de la Montérégie-Estsantemonteregie.qc.ca
Providing health and social services across multiple cities with hospitals, CLSCs, housing centers, and youth support facilities staffed by professionals. |
2,726 |
| 31 |
Société de l'assurance automobile du Québecmessages.saaq.gouv.qc.ca
Safeguarding individuals on the road by administering insurance, promoting road safety, and monitoring transportation compliance with laws and regulations |
2,683 |
| 32 |
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 |
| 33 |
Université du Québec à Trois-Rivièresuqtr.ca
Specialized university offering innovative fields of study and research, such as leisure, small business management, hydrogen research, chiropractic, midwifery, criminalistic chemistry, philosophy, and arts |
2,649 |
| 34 |
Centre de services scolaire de Laval (CSS de Laval)csslaval.gouv.qc.ca
A government organization in Laval, Quebec, providing French educational services to 56,000 students through a network of schools and centers |
2,524 |
| 35 |
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 |
| 36 |
CISSS de la Montérégie-Centrenousrecrutons.ca
The integrated health and social services center in Montérégie-Centre offers quality care and services to 420,000 residents through a network of facilities and medical professionals |
2,465 |
| 37 |
La Caisse (Caisse de dépôt et placement du Québec)lacaisse.com
Global investment group managing funds for public retirement and insurance plans, focusing on major financial markets, private equity, infrastructure, real estate, and private debt |
2,389 |
| 38 |
CISSS de Chaudière-Appalachescisssca.com
Healthcare organization managing 105 facilities across Chaudière-Appalaches region, providing a wide range of medical services, specialized care, and home interventions with over 12,000 employees |
2,366 |
| 39 |
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 |
| 40 |
Sûreté du Québecsq.gouv.qc.ca
Law enforcement agency in Quebec enforcing provincial laws, criminal code, and municipal bylaws while utilizing technology and assisting local police forces |
2,297 |
| 41 |
Santé Québec Montérégie-Ouestemplois-cisssmo.ca
The organization provides integrated health and social services in the western part of Montérégie region, aiming to improve population well-being |
2,285 |
| 42 |
Santé Québec Lanaudièrecisss-lanaudiere.gouv.qc.ca
A healthcare and social services organization formed from five institutions, serving over 524,000 residents with a budget of $11 billion |
2,283 |
| 43 |
Santé Québec Lavallavalensante.com
A healthcare organization in Laval with hospitals, outpatient services, CLSCs, family medicine groups, CHSLDs, child protection, rehabilitation centers, and academic affiliations |
2,236 |
| 44 |
Centre de services scolaire de la Pointe-de-l'Île (CSSPI)csspi.gouv.qc.ca
A large educational institution in Quebec offering educational services from preschool to adult education with over 44,000 students and 7,000 employees |
2,217 |
| 45 |
English Montreal School Boardemsb.qc.ca
The organization oversees a network of over 70 schools and centers, serving a student population of more than 36,000 in Quebec |
2,187 |
| 46 |
Élections Canada | Elections Canadaelections.ca
An independent agency of Parliament responsible for administering federal elections, by-elections, and referendums in Canada |
2,181 |
| 47 |
Ministère de la Sécurité intérieure (MSI)quebec.ca
The company's mission is to ensure public safety in Quebec through collaboration with partners, including police, fire services, and community organizations Their vision is to create a secure environment for social and economic development |
2,171 |
| 48 |
Lester B. Pearson School Board (LBPSB)lbpsb.qc.ca
A prominent K-12 English school board in Quebec with a network of schools, adult education centers, and vocational centers serving thousands of students |
2,094 |
| 49 |
Loto-Québeccarrieres.lotoquebec.com
Offers diverse gambling products including lotteries, casino games, online gaming, bingo, and video lottery with responsible entertainment focus. |
1,806 |
| 50 |
CIUSSS du Saguenay-Lac-Saint-Jeansantesaglac.gouv.qc.ca
The organization is a health and social services integrated center in the Saguenay-Lac-Saint-Jean region, formed by merging nine public institutions |
1,771 |
| 51 |
Centre de services scolaire des Patriotescssp.gouv.qc.ca
A school service center in Montérégie East supports a network of 69 schools and training centers for over 36,000 students |
1,767 |
| 52 |
Centre de services scolaire Marie-Victorincssmv.gouv.qc.ca
An educational organization on Montreal's South Shore providing quality education and support to 41,000 students, offering diverse opportunities and competitive benefits |
1,766 |
| 53 |
CISSS de l'Outaouaiscisss-outaouais.gouv.qc.ca
The organization in Outaouais region works to provide accessible and integrated health and social services to improve community's well-being |
1,761 |
| 54 |
Ministère de la Cybersécurité et du Numérique du Québec (MCN)quebec.ca
Provides technology infrastructure and common support systems to public organizations, enabling digital transformation and efficient service delivery. |
1,706 |
| 55 |
Centre de services scolaire des Mille-Îlescssmi.qc.ca
Innovative, committed, and high-performing educational services provider with 80 establishments in Basses-Laurentides, focusing on the success of 46,000 students |
1,621 |
| 56 |
Santé Québecsante.quebec
Provide health and social services through public institutions, manage network operations to ensure user satisfaction and care quality. |
1,528 |
| 57 |
PSP Investments | Investissements PSPinvestpsp.com
Management of diversified global investment portfolio for Canadian federal public sector pension funds including equities, real estate, infrastructure, and private debt. |
1,387 |
| 58 |
Centre de services scolaire des Affluents (CSSDA)cssda.gouv.qc.ca
One of the top five school service centers in Quebec, serving 50,000 students in 72 schools, with a focus on student success and high-performance practices |
1,378 |
| 59 |
Université du Québec en Outaouaisuqo.ca
A public Francophone university providing quality education and research in Quebec, Canada, with over 7,300 students, 200 professors, and renowned research teams |
1,370 |
| 60 |
Investissement Québecinvestquebec.com
Support foreign and local businesses with financial solutions, expert advice, and resources to succeed in Québec's unique business environment. |
1,331 |
| 61 |
Héma-Québechemaquebec.ca
Collection and distribution of blood, stem cells, breast milk, and human tissue to hospitals for patient care in Québec. |
1,304 |
| 62 |
CISSS du Bas-Saint-Laurentemplois.cisssbsl.com
The CISSS du Bas-Saint-Laurent provides career opportunities in a stimulating work environment, seeking talented and passionate individuals in the healthcare field |
1,287 |
| 63 |
Université du Québec à Rimouskiuqar.ca
A French-language university dedicated to spreading knowledge and contributing to the local community since its founding in 1969 |
1,269 |
| 64 |
Université du Québec à Chicoutimiuqac.ca
An education institution founded in 1969 with a diverse student body of 6,500, including international students from over 50 countries |
1,230 |
| 65 |
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 |
| 66 |
Commission scolaire Marie-Victorinqc.ca
A major educational institution in Quebec serving over 36,000 students, with 8000+ employees and 75 establishments, one of the largest employers on the South Shore |
1,172 |
| 67 |
Société québécoise des infrastructuressqi.gouv.qc.ca
Established by the Quebec government in 2013, the company manages public infrastructure projects and provides real estate services to government departments and agencies |
1,164 |
| 68 |
Dawson Collegedawsoncollege.qc.ca
An English-language CEGEP in downtown Montreal offering over 50 fields of study with a diverse student and staff population Multiple job opportunities available |
1,153 |
| 69 |
Commission scolaire des Patriotescsp.ca
The company provides educational services to over 34,000 students across various primary and secondary schools, adult education centers, and vocational training centers |
1,147 |
| 70 |
Assemblée nationale du Québecassnat.qc.ca
A crucial institution in Quebec, the assembly gathers elected officials to debate societal issues, while also serving as a welcoming space for citizens and visitors |
1,140 |
| 71 |
Sir Wilfrid Laurier School Boardswlauriersb.qc.ca
The company is an English school board in Quebec with 26 elementary schools, 9 high schools, vocational training centers, and high success rates |
1,055 |
| 72 |
Commission de la construction du Québecccq.org
Public agency managing labor relations, training, social benefits, and compliance for Quebec's construction industry employers and workers. |
1,031 |
| 73 |
Centre de services scolaire des Navigateurscssdn.gouv.qc.ca
Education service provider covering a large territory with nearly 29,500 students, youth, and adults, employing over 4,300 staff members |
998 |
| 74 |
College Ahuntsiccollegeahuntsic.qc.ca
Specializing in custom training programs for businesses, integrating experienced educators with professional background to meet diverse training needs in various fields |
985 |
| 75 |
Vanier Collegevaniercollege.qc.ca
A public college in Montreal offering a variety of pre-university and career programs, with a diverse community and supportive faculty |
981 |
| 76 |
Régie de l'assurance maladie du Québecramq.gouv.qc.ca
This organization in Quebec manages healthcare insurance, medication, assistance programs, and payments for healthcare professionals, serving 84 million people |
958 |
| 77 |
Centre de services scolaire des Grandes-Seigneuriescssdgs.gouv.qc.ca
Educational services provider located in La Prairie, Quebec, Canada Offering a range of school services for the Grandes-Seigneuries area |
954 |
| 78 |
Cegep du Vieux Montrealcvm.qc.ca
A leading college in Montreal offering a variety of programs to over 6100 students, focusing on developing competent, autonomous, and engaged individuals |
932 |
| 79 |
CEGEP - John Abbott Collegejohnabbott.qc.ca
An English CEGEP offering pre-university, career, and continuing education programs to full-time and part-time students in Montreal's West Island |
931 |
| 80 |
Cégep de Sainte-Foycegep-ste-foy.qc.ca
A college focused on innovation and success, offering high-quality education with dedicated teachers Located in Quebec City, serving 8,000 students annually |
930 |
| 81 |
Centre de services scolaire de la Région-de-Sherbrookecssrs.gouv.qc.ca
A leading educational institution in the Eastern Townships, employing over 3000 staff members and providing quality educational services to over 20,000 students |
914 |
| 82 |
Université du Québec en Abitibi-Témiscamingueuqat.ca
A university in Abitibi-Témiscamingue offering accessible education with a focus on student success, personalized support, and strong relationships with the local community |
876 |
| 83 |
Institut national de santé publique du Québecinspq.qc.ca
This organization aims to advance public health knowledge and strategies to improve the health and well-being of Québecers through cross-sector collaboration |
874 |
| 84 |
Centre de services scolaire des Premières-Seigneuries (CSSPS)cssps.gouv.qc.ca
A diverse educational institution with over 40 schools, serving over 31,500 students in Quebec City and surrounding areas, with a focus on student success and future-oriented learning |
870 |
| 85 |
Institut national de la recherche scientifiqueinrs.ca
Dedicated to research and graduate education, the company collaborates with industry to develop solutions in various sectors such as health, environment, and nanotechnologies |
859 |
| 86 |
Université TÉLUQteluq.ca
A pioneer in French-language distance education, offering over 100 programs and 400 courses to 18,000 students annually in North America |
847 |
| 87 |
CSSC - Centre de services scolaire de la Capitalecssc.gouv.qc.ca
The organization is focused on supporting student success through enriching, inclusive public education in the Quebec and Chaudière-Appalaches regions |
832 |
| 88 |
Centre de services scolaire des Samarescsssamares.gouv.qc.ca
Education organization in Lanaudière regrouping 4500 employees, focusing on creating a learning environment with dedicated students, engaged staff, supportive parents, and involved partners |
815 |
| 89 |
Autorité des marchés financiers (Québec)lautorite.qc.ca
Regulation of Quebec's financial markets including insurance, securities, derivatives, deposit institutions, and consumer protection in financial services. |
804 |
| 90 | 803 | |
| 91 |
Cégep Limoiloucegeplimoilou.ca
Creative higher education institution offering diverse programs, quality teaching, and opportunities for student success through engagement and community support |
773 |
| 92 |
Cégep Marie-Victorincegepmv.ca
A post-secondary institution located near Montreal with a focus on student success, offering a variety of programs and recognized for its achievements in education and sustainability |
765 |
| 93 |
Collège de Bois-de-Boulognebdeb.qc.ca
Public college offering pre-university, technical programs, continuing education, AI research center, and extensive sports facilities for community engagement. |
765 |
| 94 |
Hopital Maisonneuve-Rosemontmaisonneuve-rosemont.org
Medical practice specializing in providing healthcare services located in Montreal, Quebec, Canada |
740 |
| 95 |
Centre de services scolaire des Hautes-Rivièrescssdhr.gouv.qc.ca
The organization supports schools in providing tailored educational services for students to help them learn, socialize, qualify, and become responsible citizens |
737 |
| 96 |
Cégep de Sherbrookecegepsherbrooke.qc.ca
A leading general and vocational college offering quality education and services to over 6500 students annually in a variety of programs |
722 |
| 97 |
Urgences-santéurgences-sante.qc.ca
Public organization providing prehospital emergency medical services and communication for urgent health calls in Montreal and Laval regions. |
719 |
| 98 |
Collège Lionel-Groulxclg.qc.ca
Providing a holistic education focused on humanism, citizenship, and sustainability to empower students to succeed professionally and personally within a supportive and inclusive environment |
715 |
| 99 |
CSPQ - Gouvernement du Québecquebec.ca
The company's services have been transferred to the Government Procurement Center, Quebec's Technology Infrastructure, and other government departments and agencies |
711 |
| 100 |
Cégep de Lanaudièrecegep-lanaudiere.qc.ca
This company offers DEC and AEC training in a variety of fields such as industrial electronics, social work, accounting, nursing, and more |
669 |
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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.
More company lists in the province of Quebec
- The largest companies in the province of Quebec 1,985
- Retail chains in the province of Quebec 122
- Retail companies in the province of Quebec 104
- Critical infrastructure operators in the province of Quebec 101
- Financial services firms in the province of Quebec 92
- Truck Transportation companies in the province of Quebec 91
- IT Services and IT Consulting companies in the province of Quebec 89
- Government Administration companies in the province of Quebec 83
- SaaS companies in the province of Quebec 82
- Transportation, Logistics, Supply Chain and Storage companies in the province of Quebec 79
- Software Development companies in the province of Quebec 77
- Manufacturers in the province of Quebec 76
- Education providers in the province of Quebec 70
- Higher Education companies in the province of Quebec 69
- Distributors and wholesalers in the province of Quebec 69
- Construction companies in the province of Quebec 67
- Financial Services companies in the province of Quebec 61
- Education Administration Programs companies in the province of Quebec 58
- Family-owned companies in the province of Quebec 53
- Hospitals and Health Care companies in the province of Quebec 49
- IT services companies in the province of Quebec 46
- Healthcare providers in the province of Quebec 45
- Insurance companies in the province of Quebec 42
- Machinery Manufacturing companies in the province of Quebec 42
The same list elsewhere in Canada
- Public sector organisations in Canada 499
- Public sector organisations in Ontario 196
- Public sector organisations in British Columbia 59
- Public sector organisations in Alberta 52
- Public sector organisations in Toronto 43
- Public sector organisations in Ottawa 42
- Public sector organisations in Montreal 41
- Public sector organisations in Quebec City 31