This list features critical infrastructure operators in Manitoba, primarily large public service providers and financial institutions. Companies like Manitoba Hydro generate and distribute electricity and natural gas, while the Winnipeg Regional Health Authority provides healthcare to over 700,000 residents. The City of Winnipeg manages urban development and public services, and Great-West Life offers insurance.
A notable pattern is the concentration of headquarters in Winnipeg, which hosts the majority of these larger organizations. The companies span essential sectors including utilities, healthcare, government administration, and financial services, indicating a strong focus on foundational public and economic support within the province.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Manitoba Hydrohydro.mb.ca
Generate and distribute electricity and natural gas across Manitoba, export electricity, provide energy services, and maintain strong community and Indigenous relationships. |
3,354 | |||
| 2 |
Winnipeg Regional Health Authority (WRHA)wrha.mb.ca
A large and diverse health region in Canada providing healthcare to over 700,000 residents in Winnipeg and surrounding areas, as well as specialty referral services to others |
2,899 | |||
| 3 |
City of Winnipegwinnipeg.ca
Local government managing urban development, public services, and economic growth in a diverse, steadily growing Canadian city. |
2,732 | |||
| 4 |
Great-West Lifecanadalife.com
A leading insurance company formed by merging three separate entities, now operating as one under a new unified brand |
2,021 | |||
| 5 |
Shared Health-Soins Communssharedhealthmb.ca
Collaborative health system focusing on equitable, patient-centred care, cultural safety, and innovation to meet diverse Manitobans' healthcare needs. |
1,644 | |||
| 6 |
Health Sciences Centrehsc.mb.ca
Health Sciences Centre Winnipeg is Manitoba's major health-care facility, providing specialized care in trauma, transplants, burns, neurosciences, cancer, and pediatric services |
1,358 | |||
| 7 |
St. Boniface Hospitalstbonifacehospital.ca
Provincially designated bilingual hospital in Manitoba, offering diverse career opportunities in healthcare, teaching, research, and cardiac services with over 4,000 employees |
1,288 | |||
| 8 |
IGM Financial Inc.igmfinancial.com
Provides financial planning and investment management services supporting advisors and clients with $248 billion assets under management in Canada. |
683 | |||
| 9 |
Prairie Mountain Healthprairiemountainhealth.ca
Healthcare organization providing a wide range of career opportunities for professionals to improve physical, mental, and social well-being in Western Manitoba |
643 | |||
| 10 |
Assiniboine Credit Unionacu.ca
Financially strong and socially responsible credit union in Manitoba, offering competitive benefits and meaningful employment in a safe workplace environment |
596 | |||
| 11 |
Access Credit Unionaccesscu.ca
A leading credit union in Manitoba, offering a supportive work environment, competitive compensation, career development opportunities, and community-focused initiatives |
517 | |||
| 12 |
CancerCare Manitobacancercare.mb.ca
Provincial cancer authority providing prevention, treatment, care, and research services for cancer and blood disorders with expertise and compassion |
511 | |||
| 13 |
Cando Rail & Terminalscandorail.com
Specialized rail operating services provider in Canada, offering short line operations, industrial switching, material handling, and more to optimize supply chains |
466 | |||
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| 14 |
Steinbach Credit Unionscu.mb.ca
A Manitoba-based financial institution offering personalized products and services to members, focused on building trust and support for nearly 85 years |
441 | |||
| 15 |
Perimeter Aviationperimeter.ca
A diversified airline company in Manitoba operating scheduled air service, flight training school, charter flights, fuel depot, maintenance facility, and aircraft leasing |
430 | |||
| 16 |
Southern Health-Sant茅 Sudsouthernhealth.ca
A regional health authority in southern Manitoba prioritizing people-centered care, serving over 27,000 square kilometers with quality health services |
399 | |||
| 17 |
Interlake-Eastern Regional Health Authorityierha.ca
Health authority responsible for delivering healthcare services in Manitoba's Interlake-Eastern region, prioritizing health, wellness, and community partnerships in a diverse, culturally rich area |
398 | |||
| 18 |
Health Science Centrehsc.mb.ca
Leading provider of healthcare services in Canada, renowned for its size and excellence in patient care |
388 | |||
| 19 |
Manitoba eHealth - Winnipeg Regional Health Authoritysharedhealthmb.ca
Information and communication technology services facilitating province-wide healthcare delivery transformation through integrated digital solutions under provincial board direction for improved patient care enablement. |
368 | |||
| 20 |
Seven Oaks General Hospitalsogh.mb.ca
A hospital and healthcare company located in Winnipeg, Manitoba, Canada, providing medical services at 2300 McPhillips St |
315 | |||
| 21 |
Concordia Hospitalconcordiahospital.mb.ca
A healthcare organization founded by Mennonite immigrants in 1928, offering compassionate care in the spirit of Christian community and mutual aid |
314 | |||
| 22 |
Tundra Oil & Gastundraoilandgas.com
A privately-owned energy company focused on oil and gas operations in the Williston Basin, with strategic acquisitions and advanced technology for exploration and development |
309 | |||
| 23 |
Cambrian Credit Unioncambrian.mb.ca
Established in 1959, this company is one of the largest credit unions serving Winnipeg and Selkirk, with a virtual division offering financial services |
278 | |||
| 24 |
Calm Air International LPcalmair.com
A niche airline serving Central Canada's northern region with scheduled passenger and cargo flights, charter services, and specialized aircraft for Arctic conditions |
261 | |||
| 25 |
Winnipeg Airports Authority | Administration a茅roportuaire de Winnipegywg.ca
An airport authority that enables safe and seamless movement of people and goods, connecting Manitoba to the world while reinvesting revenue for sustainability |
184 | |||
| 26 |
Kleysen Group Ltdkleysen.com
A transportation and logistics company providing bulk, deck, intermodal, and distribution services in Canada and the United States with a focus on customer service and innovative solutions |
179 | |||
| 27 |
Portage Transportportagetransport.com
A transportation company based in Canada specializing in moving products to and from the USA and across Canada efficiently |
55 | |||
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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.
More company lists in Manitoba
- The largest companies in Manitoba 251
- Multinational companies in Manitoba 42
- Manufacturers in Manitoba 34
- Truck Transportation companies in Manitoba 32
- Public sector organisations in Manitoba 27
- Retail chains in Manitoba 25
The same list elsewhere in Canada
- Critical infrastructure operators in Canada 767
- Critical infrastructure operators in Ontario 344
- Critical infrastructure operators in the province of Quebec 126
- Critical infrastructure operators in Alberta 124
- Critical infrastructure operators in British Columbia 78
- Critical infrastructure operators in Toronto 120
- Critical infrastructure operators in Calgary 83
- Critical infrastructure operators in Montreal 51
- Critical infrastructure operators in Ottawa 30
- Critical infrastructure operators in Vancouver 26
- Critical infrastructure operators in Mississauga 24