# 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).

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.

🇨🇦 Alberta · 50 companies · Updated Nov 11, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [PCL Construction](https://www.tamtam.ai/c/pcl-construction) (pcl.com)<br>Independent construction companies operating in civil infrastructure, heavy industrial, and building markets across multiple countries with employee ownership. | Construction | 🇨🇦 Edmonton | 12,795 | 1906 |
| 2 | [ATCO](https://www.tamtam.ai/c/atco) (atco.com)<br>Global diversified corporation with over 7,100 employees and $24 billion assets, providing essential services across multiple industries worldwide. | Utilities | 🇨🇦 Canada | 7,064 | 1947 |
| 3 | [Mullen Group Ltd.](https://www.tamtam.ai/c/mullen-group-ltd)<br>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 | 🇨🇦 | 5,001 | 1949 |
| 4 | [MLSE (Maple Leaf Sports & Entertainment Partnership)](https://www.tamtam.ai/c/mlse-maple-leaf-sports-and-entertainment-partnership) (mlse.com)<br>A leading provider of sport and entertainment experiences in North America, owning major sports teams and operating venues for live events | Spectator Sports | 🇨🇦 Toronto | 3,105 |  |
| 5 | [Leon's Furniture](https://www.tamtam.ai/c/leon-s-furniture) (leons.ca)<br>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 | 🇨🇦 Toronto | 1,800 | 1909 |
| 6 | [WSP \| MMM Group](https://www.tamtam.ai/c/wsp-mmm-group) (wspgroup.ca)<br>A Canadian multinational specializing in engineering consulting, urban planning, environmental remediation, and sustainable transportation solutions with a global presence | Civil Engineering | 🇨🇦 | 1,788 |  |
| 7 | [SCM Insurance Services](https://www.tamtam.ai/c/scm-insurance-services) (www1.scm.ca)<br>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 | 🇨🇦 Edmonton | 1,604 | 1986 |
| 8 | [Lafarge Canada](https://www.tamtam.ai/c/lafarge-canada) (amrize.com)<br>A leading provider of sustainable construction materials with a focus on innovative solutions for building better cities and communities across Canada | Construction | 🇨🇦 Calgary | 1,296 |  |
| 9 | [FYihealth group](https://www.tamtam.ai/c/fyihealth-group) (fyihealthgroup.com)<br>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 | 🇨🇦 Calgary | 1,291 | 2008 |
| 10 | [PTW Energy Services](https://www.tamtam.ai/c/ptw-energy-services) (ptwenergy.com)<br>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 | 🇨🇦 Rocky View County | 1,245 | 2014 |
| 11 | [Go Auto](https://www.tamtam.ai/c/go-auto) (goauto.ca)<br>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 | 🇨🇦 Edmonton | 1,202 |  |
| 12 | [North American Construction Group](https://www.tamtam.ai/c/north-american-construction-group) (nacg.ca)<br>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 | 🇨🇦 Parkland County | 1,113 |  |
| 13 | [Associated Engineering](https://www.tamtam.ai/c/associated-engineering) (ae.ca)<br>A Canadian company specializing in building sustainable communities, providing engineering and environmental consulting services, and offering creative solutions for clients worldwide | Civil Engineering | 🇨🇦 Edmonton | 1,101 | 1946 |
| 14 | [CEDA](https://www.tamtam.ai/c/ceda-calgary) (ceda.com)<br>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 | 🇨🇦 Calgary | 1,043 | 1973 |
| 15 | [Propak Systems Ltd.](https://www.tamtam.ai/c/propak-systems-ltd) (propaksystems.com)<br>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 | 🇨🇦 Airdrie | 854 | 1976 |
| 16 | [Gran Tierra Energy](https://www.tamtam.ai/c/gran-tierra-energy) (grantierra.com)<br>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 | 🇨🇦 Calgary | 820 |  |
| 17 | [Calgary Sports and Entertainment Corporation](https://www.tamtam.ai/c/calgary-sports-and-entertainment-corporation) (nhl.com)<br>Professional sports and entertainment company based in Calgary, Alberta, managing teams in NHL, WHL, NLL, CFL, and AHL | Sports Teams and Clubs | 🇨🇦 Calgary | 817 | 1980 |
| 18 | [Peoples Group](https://www.tamtam.ai/c/peoples-group) (peoplesgroup.com)<br>Provides deposits, lending, and payment services supporting fintechs, brokers, and merchants to foster a competitive Canadian financial ecosystem. | Financial Services | 🇨🇦 | 790 | 1985 |
| 19 | [Java Holdings Ltd](https://www.tamtam.ai/c/java-holdings-ltd) (javaholdings.ca)<br>A family-owned investments and management business with operational units in construction, electrical services, energy, aviation, hydroelectric, and project management | Business Consulting and Services | 🇨🇦 Nisku | 765 |  |
| 20 | [Black Diamond Group](https://www.tamtam.ai/c/black-diamond-group) (blackdiamondgroup.com)<br>Specializing in modular buildings and remote workforce accommodations, providing comprehensive solutions including rentals, sales, and crew travel management through digital platforms | Construction | 🇨🇦 Calgary | 744 | 2003 |
| 21 | [Pason](https://www.tamtam.ai/c/pason) (pason.com)<br>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 | 🇨🇦 Calgary | 733 | 1978 |
| 22 | [Stream-Flo Industries](https://www.tamtam.ai/c/stream-flo-industries) (streamflo.com)<br>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 | 🇨🇦 Edmonton | 671 | 1962 |
| 23 | [Colas Western Canada Inc.](https://www.tamtam.ai/c/colas-western-canada-inc) (colascanada.ca)<br>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 | 🇨🇦 St Albert | 652 |  |
| 24 | [Fort McKay Group of Companies LP](https://www.tamtam.ai/c/fort-mckay-group-of-companies-lp) (fortmckaygroup.com)<br>Provides earthworks, site services, fleet maintenance, fuel, reclamation, logistics, and mechanical services for oilfield industry in Alberta. | Oil and Gas | 🇨🇦 Fort McMurray | 587 | 1986 |
| 25 | [OEG Inc.](https://www.tamtam.ai/c/oeg-inc) (oeg.ca)<br>A leading organization in North America specializing in sports, entertainment, retail cannabis, and hospitality industries | Spectator Sports | 🇨🇦 Edmonton | 569 | 1979 |
| 26 | [Rohit Group](https://www.tamtam.ai/c/rohit-group) (rohitgroup.com)<br>A vertically integrated enterprise in North America, specializing in real estate development and management, with a strong focus on community enrichment | Real Estate | 🇨🇦 Edmonton | 563 | 1986 |
| 27 | [SNDL Inc.](https://www.tamtam.ai/c/sndl-inc) (sndl.com)<br>The company is a leading liquor and cannabis retailer in Canada, also involved in cannabis production and manufacturing with various brands | Manufacturing | 🇨🇦 Calgary | 559 | 2014 |
| 28 | [Rocky Mountain Equipment](https://www.tamtam.ai/c/rocky-mountain-equipment) (rockymtn.com)<br>Agriculture and construction equipment dealership consolidator operating in Alberta, Saskatchewan, and Manitoba, focused on CNH brands, with a commitment to customer satisfaction | Farming | 🇨🇦 Calgary | 554 | 2007 |
| 29 | [Strike Group](https://www.tamtam.ai/c/strike-group) (linktr.ee)<br>Western Canada's leading provider of infrastructure construction and maintenance services for energy, petrochemical, mining, and agriculture sectors, emphasizing community involvement and safety | Construction | 🇨🇦 Calgary | 527 | 2004 |
| 30 | [KAG Canada](https://www.tamtam.ai/c/kag-canada) (kagcanada.ca)<br>Canadian service group for North America’s largest tank truck transporter and logistics provider, serving agriculture, energy, petroleum, and mining industries. | Truck Transportation | 🇨🇦 Edmonton | 499 | 1964 |
| 31 | [Trotter & Morton Group of Companies](https://www.tamtam.ai/c/trotter-and-morton-group-of-companies) (trotterandmorton.com)<br>A building trades expert focused on iconic projects, attracting top talent through diverse divisions and fostering growth in the construction industry | Construction | 🇨🇦 Calgary | 473 | 1927 |
| 32 | [Forbes Bros. Group of Companies](https://www.tamtam.ai/c/forbes-bros-group-of-companies) (forbesbrosgroup.com)<br>A privately-held utility construction contractor with operations across North America, specializing in powerline construction and fleet management for large transmission projects | Construction | 🇨🇦 Edmonton | 385 | 1976 |
| 33 | [Alberta Innovates](https://www.tamtam.ai/c/alberta-innovates) (albertainnovates.ca)<br>This organization fosters innovation and entrepreneurship in Alberta to address global health, nature, energy, food, and fiber challenges through partnerships and technology | Research Services | 🇨🇦 Edmonton | 382 | 2016 |
| 34 | [Thompson Construction Group](https://www.tamtam.ai/c/thompson-construction-group) (thompsoncg.ca)<br>Alberta-based contractor specializing in heavy civil earth moving, highway, oil sands plant construction, and workplace safety with multiple locations and partnerships | Construction | 🇨🇦 Spruce Grove | 381 | 1964 |
| 35 | [Nuna Group of Companies](https://www.tamtam.ai/c/nuna-group-of-companies) (nunagroup.com)<br>A heavy civil construction company specializing in remote projects, earthworks, and contract mining with a focus on Indigenous employment and training | Construction | 🇨🇦 Edmonton | 370 | 1993 |
| 36 | [Sureway Construction Group Ltd.](https://www.tamtam.ai/c/sureway-construction-group-ltd) (sureway.ca)<br>This civil general contractor in Alberta offers expertise in Greenfield & Brownfield projects with a large equipment fleet, financial strength, and experienced teams | Construction | 🇨🇦 Edmonton | 368 | 1973 |
| 37 | [Volker Stevin](https://www.tamtam.ai/c/volker-stevin) (volkerstevin.ca)<br>A construction and project management company dedicated to providing quality services, building long-term relationships, and promoting safety, professionalism, and growth | Construction | 🇨🇦 Calgary | 364 | 1978 |
| 38 | [DCM Group Inc.](https://www.tamtam.ai/c/dcm-group-inc) (dcmgroup.ca)<br>DCM Group provides construction services to various industries in Canada, specializing in complex projects with a focus on safety and expertise | Construction | 🇨🇦 Sherwood Park | 322 |  |
| 39 | [Acden](https://www.tamtam.ai/c/acden) (acden.com)<br>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 | 🇨🇦 Fort McMurray | 273 | 1994 |
| 40 | [Athabasca Oil Corporation](https://www.tamtam.ai/c/athabasca-oil-corporation) (atha.com)<br>Intermediate producer in Canada's resource plays – Montney, Duvernay, Oil Sands Strong growth potential, dynamic work environment Publicly traded on TSX | Oil and Gas | 🇨🇦 Calgary | 255 | 2006 |
| 41 | [Tidewater Midstream and Infrastructure](https://www.tamtam.ai/c/tidewater-midstream-and-infrastructure) (tidewatermidstream.com)<br>A company in Western Canada specializing in natural gas processing, fractionation, liquids upgrading, storage, transportation, and marketing | Oil and Gas | 🇨🇦 Calgary | 242 | 2015 |
| 42 | [Wolf Midstream](https://www.tamtam.ai/c/wolf-midstream) (wolfmidstream.com)<br>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 | 🇨🇦 Calgary | 212 | 2016 |
| 43 | [Joey's Restaurants](https://www.tamtam.ai/c/joey-s-restaurants) (joeysfranchisegroup.com)<br>A leading seafood chain with over 45 locations in Canada, known for serving famous fish & chips and introducing a new fast-casual concept | Restaurants | 🇨🇦 Calgary | 193 | 1985 |
| 44 | [Aplin](https://www.tamtam.ai/c/aplin) (aplin.com)<br>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 | 🇨🇦 Calgary | 191 | 1975 |
| 45 | [High Arctic Energy Services](https://www.tamtam.ai/c/high-arctic-energy-services) (haes.ca)<br>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 | 🇨🇦 Calgary | 184 | 1993 |
| 46 | [WQS Group](https://www.tamtam.ai/c/wqs-group) (wqsgoc.com)<br>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 | 🇨🇦 Sherwood Park | 181 | 2016 |
| 47 | [Power Corporation of Canada](https://www.tamtam.ai/c/power-corporation-of-canada) (powercorporation.com)<br>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 | 🇨🇦 Montreal | 146 | 1925 |
| 48 | [CanElson Drilling Inc.](https://www.tamtam.ai/c/canelson-drilling-inc)<br>A leading provider of oilfield services specializing in operating land-based contract drilling rigs and offering gas transportation solutions | Oil and Gas | 🇨🇦 Calgary | 87 | 2008 |
| 49 | [Jaffer Group of Companies](https://www.tamtam.ai/c/jaffer-group-of-companies) (jaffergroup.com)<br>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 | 🇨🇦 Edmonton | 39 | 2005 |
| 50 | [Coril Holdings Ltd.](https://www.tamtam.ai/c/coril-holdings-ltd) (coril.com)<br>A privately-owned parent company based in Calgary with diverse investments in railway services, real estate, wellness, and sustainable businesses | Investment Management | 🇨🇦 Calgary | 20 |  |

## 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 Alberta

- [The largest companies in Alberta](https://www.tamtam.ai/l/largest-companies-alberta) (1,391)
- [Oil and Gas companies in Alberta](https://www.tamtam.ai/l/oil-and-gas-companies-alberta) (314)
- [Energy companies in Alberta](https://www.tamtam.ai/l/energy-companies-alberta) (267)
- [Multinational companies in Alberta](https://www.tamtam.ai/l/multinational-companies-alberta) (240)
- [Critical infrastructure operators in Alberta](https://www.tamtam.ai/l/critical-infrastructure-operators-alberta) (124)
- [Manufacturers in Alberta](https://www.tamtam.ai/l/manufacturers-alberta) (113)
- [Retail chains in Alberta](https://www.tamtam.ai/l/retail-chains-alberta) (101)
- [Construction companies in Alberta](https://www.tamtam.ai/l/construction-companies-alberta) (83)
- [Professional services firms in Alberta](https://www.tamtam.ai/l/professional-services-firms-alberta) (81)
- [Hardware manufacturers in Alberta](https://www.tamtam.ai/l/hardware-companies-alberta) (76)
- [Logistics companies in Alberta](https://www.tamtam.ai/l/logistics-companies-alberta) (76)
- [Companies with in-house R&D in Alberta](https://www.tamtam.ai/l/r-and-d-companies-alberta) (74)
- [Public sector organisations in Alberta](https://www.tamtam.ai/l/public-sector-organisations-alberta) (71)
- [Publicly traded companies in Alberta](https://www.tamtam.ai/l/publicly-traded-companies-alberta) (68)
- [Education providers in Alberta](https://www.tamtam.ai/l/education-companies-alberta) (64)
- [Financial services firms in Alberta](https://www.tamtam.ai/l/financial-services-firms-alberta) (57)
- [Truck Transportation companies in Alberta](https://www.tamtam.ai/l/truck-transportation-companies-alberta) (55)
- [Consulting firms in Alberta](https://www.tamtam.ai/l/consulting-firms-alberta) (54)
- [SaaS companies in Alberta](https://www.tamtam.ai/l/saas-companies-alberta) (54)
- [Distributors and wholesalers in Alberta](https://www.tamtam.ai/l/distributors-and-wholesalers-alberta) (53)
- [IT Services and IT Consulting companies in Alberta](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-alberta) (47)
- [Software Development companies in Alberta](https://www.tamtam.ai/l/software-development-companies-alberta) (45)
- [Healthcare providers in Alberta](https://www.tamtam.ai/l/healthcare-providers-alberta) (41)
- [IT services companies in Alberta](https://www.tamtam.ai/l/it-services-companies-alberta) (39)

## The same list elsewhere in Canada

- [Corporate groups and holding companies in Canada](https://www.tamtam.ai/l/holding-companies-canada) (318)
- [Corporate groups and holding companies in Ontario](https://www.tamtam.ai/l/holding-companies-ontario) (117)
- [Corporate groups and holding companies in the province of Quebec](https://www.tamtam.ai/l/holding-companies-province-of-quebec) (75)
- [Corporate groups and holding companies in British Columbia](https://www.tamtam.ai/l/holding-companies-british-columbia) (33)
- [Corporate groups and holding companies in Toronto](https://www.tamtam.ai/l/holding-companies-toronto) (48)
- [Corporate groups and holding companies in Montreal](https://www.tamtam.ai/l/holding-companies-montreal) (39)

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Source: https://www.tamtam.ai/l/holding-companies-alberta