This list breaks down the top mechanical engineering companies in Canada. It highlights leading firms across the country, including major players like WSP Global, Stantec, and AtkinsRéalis, and explains what sets them apart. The focus is on who they serve, what they do best, and where they fit in today’s market.
This ranking covers mechanical engineering services across building systems, industrial and process engineering, energy and manufacturing projects, and core disciplines like HVAC, plumbing, fire protection, and controls.
Note: Companies were evaluated based on overall scale, depth of mechanical engineering services, project complexity, Canadian market presence, and industry reputation. Publicly available revenue and employee data were considered where applicable.
Top mechanical engineering companies in Canada
10. Cheme Engineering
Revenue: $16.6M
Employees: 51-200
CEO/Principal: Rino Parletta (Managing Director)
Founded: 2006
Headquarters: Campbellville, Ontario
Cheme Engineering provides engineering services focused on mechanical and process design support for industrial clients. They work with sectors such as manufacturing, life sciences, and facilities operations to help bring systems from concept to completion.
Notable strengths
- Flexible engineering for industrial clients
- Customized mechanical process design
- Strong client collaboration
Representative projects or sectors
- Industrial facilities
- Process engineering
- Lifecycle support
9. AME Consulting Group
Revenue: $5.5M (Engineering) + $94.2M (Tech Services)
Employees: 170+
CEO/Principal: Rob Walter (retired May 2025)
Founded: 2005
Headquarters: Victoria, BC
AME Consulting Group offers mechanical consulting engineering services that cover system design, building services, HVAC, and sustainability support. They help projects perform better while meeting client goals for efficiency and code compliance.
Notable strengths
- Sustainable mechanical design
- Energy-efficient systems
- Consulting and compliance
Representative projects or sectors
- Commercial buildings
- Institutional facilities
- Building performance consulting
8. Tatham Engineering
Revenue: $21.1M
Employees: 200+
President: Dan Hurley
Founded: 1988
Headquarters: Collingwood, Ontario
Tatham Engineering delivers multidisciplinary engineering services, including mechanical, civil, electrical, and infrastructure design. Their teams work across sectors to support planning, design, and delivery of community and industrial projects.
Notable strengths
- Integrated engineering solutions
- Local infrastructure expertise
- Client-focused service
Representative projects or sectors
- Municipal infrastructure
- Building systems
- Industrial services
7. DGH Engineering Ltd.
Revenue: $5.4M (Canada only)
Employees: 70+
CEO: Samuel Hodgkinson
Founded: 1989
Headquarters: Winnipeg, Manitoba
DGH Engineering Ltd. provides mechanical, structural, electrical, and industrial engineering services for construction, commercial, and industrial clients. They support project delivery with practical and responsive engineering solutions tailored to client goals.
Notable strengths
- Multidiscipline engineering
- Regional expertise in Manitoba
- Client-centered design
Representative projects or sectors
- Commercial buildings
- Industrial facilities
- Agri-food projects
6. Belanger Engineering
Revenue: $5.8M
Employees: 11-50
CEO/President: Paul Belanger
Founded: 1995
Headquarters: Mississauga, Ontario
Belanger Engineering provides mechanical engineering and building systems design for commercial, institutional, and multi-unit residential projects. They focus on practical, energy-efficient solutions that meet client needs and code requirements.
Notable strengths
- HVAC and MEP design
- Energy performance analysis
- Code compliance consulting
Representative projects or sectors
- Commercial developments
- Institutional facilities
- Residential complexes
5. Bantrel Corporation
Revenue: $954.8M
Employees: 900-1,000
CEO/Principal: Darren Curran
Founded: 1983
Headquarters: Calgary, Alberta
Bantrel Corporation provides engineering, procurement, and construction management (EPCM) services with strong mechanical engineering capabilities in heavy industrial sectors.
Notable strengths
- EPCM services
- Oil, gas, and mining focus
- Large-scale systems integration
Representative projects or sectors
- Oil and gas processing
- Mining and metals
- Petrochemicals
4. Aecon Group Inc.
Revenue: $5.16B
Employees: 12,000+
President/CEO: Jean-Louis Servranckx
Founded: 1877
Headquarters: Toronto, Ontario
Aecon Group Inc. offers construction, infrastructure, and engineering services, including mechanical systems, through its industrial and infrastructure divisions. The company delivers large projects across Canada in multiple sectors.
Notable strengths
- Large project delivery
- Industrial engineering
- Infrastructure systems
Representative projects or sectors
- Transportation infrastructure
- Industrial plants
- Public works
3. AtkinsRéalis (formerly SNC-Lavalin)
Revenue: $9.66B
Employees: 38,500
President & CEO: Ian L. Edwards
Founded: 1911
Headquarters: Montreal, Quebec
SNC-Lavalin, now operating as AtkinsRéalis, provides global engineering and construction services with strong mechanical engineering capabilities across infrastructure, energy, mining, and environmental projects.
Notable strengths
- Global multidisciplinary expertise
- Large-scale infrastructure
- Energy sector leadership
Representative projects or sectors
- Transportation engineering
- Power and energy
- Mining and metals
2. Stantec
Revenue: $5.9B
Employees: 34,000
President & CEO: Gord Johnston
Founded: 1954
Headquarters: Edmonton, Alberta
Stantec offers global design and consulting services with mechanical engineering integrated into buildings, infrastructure, and industrial systems. They help clients solve complex challenges while advancing sustainable outcomes.
Notable strengths
- Sustainable designs
- Wide-ranging engineering services
- Global delivery
Representative projects or sectors
- Infrastructure
- Buildings and industrial
- Water and energy
1. WSP Global Inc.
Revenue: $18.10B
Employees: 75,000
President & CEO: Alexandre L’Heureux
Founded: 1969
Headquarters: Montreal, Quebec
WSP Global Inc. is one of the world’s largest engineering consultancies, providing mechanical, electrical, environmental, and infrastructure design services across global markets. The firm supports major projects in transportation, buildings, energy, and environmental sectors.
Notable strengths
- Large global footprint
- Deep mechanical and built environment expertise
- Multi-sector project delivery
Representative projects or sectors
- Transportation
- Buildings and infrastructure
- Energy and environment
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