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50 leading corporate groups and holding companies in Alberta

Tamtam tracks 50 corporate groups and holding companies headquartered in Alberta. This list ranks all of them by number of employees on LinkedIn, led by PCL Construction, ATCO and Mullen Group Ltd.. Their median headcount is 569. Half of them were founded in 1985 or later. The most common headquarters are Calgary (20), Edmonton (13) and Toronto (2).

πŸ‡¨πŸ‡¦ Alberta50 companiesUpdated Nov 11, 2026

This selection of corporate groups and holding companies in Alberta includes firms across various industries, with a notable presence in construction, oil and gas, and civil engineering. The companies range from large, established entities to younger firms, indicating a mix of mature industries and developing sectors.

PCL Construction operates in civil infrastructure and industrial markets, while ATCO is a diversified corporation providing essential services. Mullen Group Ltd. offers logistics across North America, and SCM Insurance Services provides insurance claims and risk management. A common theme among these companies is their significant employee base, suggesting large-scale operations within Alberta and beyond.

#CompanyIndustryHeadquarters EmployeesFounded
1
PCL Constructionpcl.com

Independent construction companies operating in civil infrastructure, heavy industrial, and building markets across multiple countries with employee ownership.

Construction πŸ‡¨πŸ‡¦ Edmonton 12,795 1906
2
ATCOatco.com

Global diversified corporation with over 7,100 employees and $24 billion assets, providing essential services across multiple industries worldwide.

Utilities πŸ‡¨πŸ‡¦ Canada 7,064 1947
3
Mullen Group Ltd.

Provides logistics across North America including warehousing, truckload, and specialized hauling. Also offers services for energy, mining, forestry, and construction industries in western Canada.

Transportation, Logistics, Supply Chain and Storage πŸ‡¨πŸ‡¦ 5,001 1949
4
MLSE (Maple Leaf Sports & Entertainment Partnership)mlse.com

A leading provider of sport and entertainment experiences in North America, owning major sports teams and operating venues for live events

Spectator Sports πŸ‡¨πŸ‡¦ Toronto 3,105 n/a
5
Leon's Furnitureleons.ca

Canadian owned and operated company selling a wide range of furniture, major appliances, and home electronics, offering affordable and family-friendly home furnishings.

Furniture and Home Furnishings Manufacturing πŸ‡¨πŸ‡¦ Toronto 1,800 1909
6
WSP | MMM Groupwspgroup.ca

A Canadian multinational specializing in engineering consulting, urban planning, environmental remediation, and sustainable transportation solutions with a global presence

Civil Engineering πŸ‡¨πŸ‡¦ 1,788 n/a
7
SCM Insurance Serviceswww1.scm.ca

Provider of insurance claims adjusting, risk management, investigative, surveillance, forensic engineering, accounting services with innovative technology, expert staff, solid customer service across Canada and the United States

Insurance πŸ‡¨πŸ‡¦ Edmonton 1,604 1986
8
Lafarge Canadaamrize.com

A leading provider of sustainable construction materials with a focus on innovative solutions for building better cities and communities across Canada

Construction πŸ‡¨πŸ‡¦ Calgary 1,296 n/a
9
FYihealth groupfyihealthgroup.com

A network of optometric clinics focused on providing collaborative, cutting-edge eye care, expanding into retail optical and medical aesthetics with compassion at the forefront

Health and Human Services πŸ‡¨πŸ‡¦ Calgary 1,291 2008
10
PTW Energy Servicesptwenergy.com

Industry solutions provider delivering construction, fabrication, and maintenance services with a network across North America, serving various industrial sectors with innovative solutions

Oil and Gas πŸ‡¨πŸ‡¦ Rocky View County 1,245 2014
11
Go Autogoauto.ca

A Canadian automotive group with over 60 dealerships offering a full range of auto services, including sales, financing, insurance, service, and repair

Motor Vehicle Manufacturing πŸ‡¨πŸ‡¦ Edmonton 1,202 n/a
12
North American Construction Groupnacg.ca

A provider of mining and heavy construction services in the Canadian oil sands, with over 60 years of experience and a large equipment fleet

Mining πŸ‡¨πŸ‡¦ Parkland County 1,113 n/a
13
Associated Engineeringae.ca

A Canadian company specializing in building sustainable communities, providing engineering and environmental consulting services, and offering creative solutions for clients worldwide

Civil Engineering πŸ‡¨πŸ‡¦ Edmonton 1,101 1946
14
CEDAceda.com

A leading provider of industrial maintenance, turnaround, and environmental services across North America for oil and gas, power, chemical, mining, and steel industries

Oil and Gas πŸ‡¨πŸ‡¦ Calgary 1,043 1973
15
Propak Systems Ltd.propaksystems.com

Specializing in energy processing solutions since 1976, our focus is on quality craftsmanship, on-time delivery, modular design, engineering, and fabrication for oil and gas production

Oil and Gas πŸ‡¨πŸ‡¦ Airdrie 854 1976
16
Gran Tierra Energygrantierra.com

Oil and gas exploration and production company focused on Colombia and Ecuador, creating value through global experience in a transparent and responsible manner

Oil and Gas πŸ‡¨πŸ‡¦ Calgary 820 n/a
17
Calgary Sports and Entertainment Corporationnhl.com

Professional sports and entertainment company based in Calgary, Alberta, managing teams in NHL, WHL, NLL, CFL, and AHL

Sports Teams and Clubs πŸ‡¨πŸ‡¦ Calgary 817 1980
18
Peoples Grouppeoplesgroup.com

Provides deposits, lending, and payment services supporting fintechs, brokers, and merchants to foster a competitive Canadian financial ecosystem.

Financial Services πŸ‡¨πŸ‡¦ 790 1985
19
Java Holdings Ltdjavaholdings.ca

A family-owned investments and management business with operational units in construction, electrical services, energy, aviation, hydroelectric, and project management

Business Consulting and Services πŸ‡¨πŸ‡¦ Nisku 765 n/a
20
Black Diamond Groupblackdiamondgroup.com

Specializing in modular buildings and remote workforce accommodations, providing comprehensive solutions including rentals, sales, and crew travel management through digital platforms

Construction πŸ‡¨πŸ‡¦ Calgary 744 2003
21
Pasonpason.com

Global provider of specialized data management systems for land-based and offshore rigs, offering rental solutions for data acquisition, analytics, and remote communication

Oil and Gas πŸ‡¨πŸ‡¦ Calgary 733 1978
22
Stream-Flo Industriesstreamflo.com

A privately-owned company in the energy industry, manufacturing a variety of valves and offering services for maintenance, installation, and rentals globally

Oil and Gas πŸ‡¨πŸ‡¦ Edmonton 671 1962
23
Colas Western Canada Inc.colascanada.ca

A group of companies in Western Canada specializing in pavement repair, highway maintenance, asphalt testing, road markings, and infrastructure solutions for a safer travel experience

Construction πŸ‡¨πŸ‡¦ St Albert 652 n/a
24
Fort McKay Group of Companies LPfortmckaygroup.com

Provides earthworks, site services, fleet maintenance, fuel, reclamation, logistics, and mechanical services for oilfield industry in Alberta.

Oil and Gas πŸ‡¨πŸ‡¦ Fort McMurray 587 1986
25
OEG Inc.oeg.ca

A leading organization in North America specializing in sports, entertainment, retail cannabis, and hospitality industries

Spectator Sports πŸ‡¨πŸ‡¦ Edmonton 569 1979

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26
Rohit Grouprohitgroup.com

A vertically integrated enterprise in North America, specializing in real estate development and management, with a strong focus on community enrichment

Real Estate πŸ‡¨πŸ‡¦ Edmonton 563 1986
27
SNDL Inc.sndl.com

The company is a leading liquor and cannabis retailer in Canada, also involved in cannabis production and manufacturing with various brands

Manufacturing πŸ‡¨πŸ‡¦ Calgary 559 2014
28
Rocky Mountain Equipmentrockymtn.com

Agriculture and construction equipment dealership consolidator operating in Alberta, Saskatchewan, and Manitoba, focused on CNH brands, with a commitment to customer satisfaction

Farming πŸ‡¨πŸ‡¦ Calgary 554 2007
29
Strike Grouplinktr.ee

Western Canada's leading provider of infrastructure construction and maintenance services for energy, petrochemical, mining, and agriculture sectors, emphasizing community involvement and safety

Construction πŸ‡¨πŸ‡¦ Calgary 527 2004
30
KAG Canadakagcanada.ca

Canadian service group for North America’s largest tank truck transporter and logistics provider, serving agriculture, energy, petroleum, and mining industries.

Truck Transportation πŸ‡¨πŸ‡¦ Edmonton 499 1964
31
Trotter & Morton Group of Companiestrotterandmorton.com

A building trades expert focused on iconic projects, attracting top talent through diverse divisions and fostering growth in the construction industry

Construction πŸ‡¨πŸ‡¦ Calgary 473 1927
32
Forbes Bros. Group of Companiesforbesbrosgroup.com

A privately-held utility construction contractor with operations across North America, specializing in powerline construction and fleet management for large transmission projects

Construction πŸ‡¨πŸ‡¦ Edmonton 385 1976
33
Alberta Innovatesalbertainnovates.ca

This organization fosters innovation and entrepreneurship in Alberta to address global health, nature, energy, food, and fiber challenges through partnerships and technology

Research Services πŸ‡¨πŸ‡¦ Edmonton 382 2016
34
Thompson Construction Groupthompsoncg.ca

Alberta-based contractor specializing in heavy civil earth moving, highway, oil sands plant construction, and workplace safety with multiple locations and partnerships

Construction πŸ‡¨πŸ‡¦ Spruce Grove 381 1964
35
Nuna Group of Companiesnunagroup.com

A heavy civil construction company specializing in remote projects, earthworks, and contract mining with a focus on Indigenous employment and training

Construction πŸ‡¨πŸ‡¦ Edmonton 370 1993
36
Sureway Construction Group Ltd.sureway.ca

This civil general contractor in Alberta offers expertise in Greenfield & Brownfield projects with a large equipment fleet, financial strength, and experienced teams

Construction πŸ‡¨πŸ‡¦ Edmonton 368 1973
37
Volker Stevinvolkerstevin.ca

A construction and project management company dedicated to providing quality services, building long-term relationships, and promoting safety, professionalism, and growth

Construction πŸ‡¨πŸ‡¦ Calgary 364 1978
38
DCM Group Inc.dcmgroup.ca

DCM Group provides construction services to various industries in Canada, specializing in complex projects with a focus on safety and expertise

Construction πŸ‡¨πŸ‡¦ Sherwood Park 322 n/a
39
Acdenacden.com

Acden offers essential services for Alberta's Oil Sands, including fleet maintenance, waste management, metal fabrication, and engineering disciplines, as well as Indigenous enterprise support

Oil and Gas πŸ‡¨πŸ‡¦ Fort McMurray 273 1994
40
Athabasca Oil Corporationatha.com

Intermediate producer in Canada's resource plays – Montney, Duvernay, Oil Sands Strong growth potential, dynamic work environment Publicly traded on TSX

Oil and Gas πŸ‡¨πŸ‡¦ Calgary 255 2006
41
Tidewater Midstream and Infrastructuretidewatermidstream.com

A company in Western Canada specializing in natural gas processing, fractionation, liquids upgrading, storage, transportation, and marketing

Oil and Gas πŸ‡¨πŸ‡¦ Calgary 242 2015
42
Wolf Midstreamwolfmidstream.com

Calgary-based energy infrastructure provider with focus on Western Canada, backed by CPPIB Expert in midstream solutions, customer-focused with long-term investments and regulatory compliance

Oil and Gas πŸ‡¨πŸ‡¦ Calgary 212 2016
43
Joey's Restaurantsjoeysfranchisegroup.com

A leading seafood chain with over 45 locations in Canada, known for serving famous fish & chips and introducing a new fast-casual concept

Restaurants πŸ‡¨πŸ‡¦ Calgary 193 1985
44
Aplinaplin.com

A Canadian staffing and recruiting agency with over 45 years of experience, connecting talent with employers to drive business growth and advance careers

Staffing and Recruiting πŸ‡¨πŸ‡¦ Calgary 191 1975
45
High Arctic Energy Serviceshaes.ca

A leading provider of specialized Rentals and Nitrogen Services in the oil and gas industry, with over 25 years of experience and a strong reputation for innovative solutions

Oil and Gas πŸ‡¨πŸ‡¦ Calgary 184 1993
46
WQS Groupwqsgoc.com

Certified Aboriginal Business offering Non-Destructive Testing and Evaluation Services in Western Canada, with hands-on owner involvement and focus on client relationships

Oil and Gas πŸ‡¨πŸ‡¦ Sherwood Park 181 2016
47
Power Corporation of Canadapowercorporation.com

International management and holding company focusing on financial services in North America, Europe, and Asia, with core holdings in insurance, retirement, wealth management, and investments

Financial Services πŸ‡¨πŸ‡¦ Montreal 146 1925
48
CanElson Drilling Inc.

A leading provider of oilfield services specializing in operating land-based contract drilling rigs and offering gas transportation solutions

Oil and Gas πŸ‡¨πŸ‡¦ Calgary 87 2008
49
Jaffer Group of Companiesjaffergroup.com

A diverse group of businesses in real estate, construction, hospitality, consulting, staffing, and knowledge management, focused on empowering partners and clients for success

Business Consulting and Services πŸ‡¨πŸ‡¦ Edmonton 39 2005
50
Coril Holdings Ltd.coril.com

A privately-owned parent company based in Calgary with diverse investments in railway services, real estate, wellness, and sustainable businesses

Investment Management πŸ‡¨πŸ‡¦ Calgary 20 n/a

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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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