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30 leading multinational companies in Calgary

Tamtam tracks 130 multinational companies headquartered in Calgary. This list ranks the 30 largest by number of employees on LinkedIn, led by Suncor, Enbridge and Canadian Natural Resources Limited (CNRL). Their median headcount is 2,802. Half of them were founded in 1987 or later.

馃嚚馃嚘 Calgary30 companiesUpdated Nov 11, 2026

This selection of multinational companies in Calgary is dominated by the oil and gas sector, with several major players in energy infrastructure and production. Most of these are large, established firms. Suncor is involved in oil sands development and refining, Enbridge provides energy infrastructure, and Canadian Natural Resources Limited is a global crude oil and natural gas producer.

Beyond energy, WestJet is an airline offering scheduled flights, Canadian Pacific is a transcontinental railway, and Graham is an employee-owned construction partner. The prevalence of companies like TC Energy and Cenovus Energy indicates Calgary's role as a hub for both traditional and transitioning energy solutions.

#CompanyIndustryHeadquarters EmployeesFounded
1
Suncorsuncor.com

Commercial oil sands development, upgrading, offshore oil and gas production, petroleum refining, and product marketing under Petro-Canada brand.

Oil and Gas 馃嚚馃嚘 Calgary 14,758 1967
2
Enbridgeenbridge.com

This company is a leading provider of energy infrastructure, delivering reliable and affordable energy sources while investing in modern infrastructure and resilient communities

Oil and Gas 馃嚚馃嚘 Calgary 11,855 n/a
3
Canadian Natural Resources Limited (CNRL)cnrl.com

Global independent crude oil and natural gas producer with diverse operations in North America, North Sea, and Offshore Africa.

Oil and Gas 馃嚚馃嚘 Calgary 9,936 1989
4
WestJetwestjet.com

An airline offering scheduled flights to over 100 destinations, vacation packages to 60+ destinations, rewards program, and award-winning customer service

Airlines and Aviation 馃嚚馃嚘 Calgary 8,899 1996
5
TC Energytcenergy.com

The company is focused on assisting the world in transitioning to cleaner energy while meeting global demand through innovative solutions

Oil and Gas 馃嚚馃嚘 Calgary 8,243 1951
6
Cenovus Energycenovus.com

An integrated energy company, operations include oil sands, crude oil, natural gas projects, and downstream upgrading, refining, and marketing across North America, Asia Pacific.

Oil and Gas 馃嚚馃嚘 Calgary 6,363 2009
7
Canadian Pacificcpkcr.com

Transcontinental railway offering freight transportation, logistics solutions, and supply chain expertise with access to major North American and global markets.

Rail Transportation 馃嚚馃嚘 Calgary 4,761 n/a
8
Enerflex Ltd.enerflex.com

Global provider of energy infrastructure and transition solutions, specializing in natural gas, low-carbon, and water treatment solutions for a sustainable future

Oil and Gas 馃嚚馃嚘 Calgary 3,578 1980
9
Grahamgrahambuilds.com

An employee-owned construction partner offering general contracting, design-build, construction management, and P3 services across buildings, industrial, and infrastructure sectors

Construction 馃嚚馃嚘 Calgary 3,379 1926
10
CPKCcpkcr.com

Specializing in innovative freight transportation services, CPKC connects North America with a single-line rail network, enhancing safety, efficiency, and sustainability in key markets

Rail Transportation 馃嚚馃嚘 Calgary 3,358 n/a
11
Agriumnutrien.com

A leading provider of crop inputs and services focused on sustainable food production, innovation, and long-term success for customers and stakeholders

Chemical Manufacturing 馃嚚馃嚘 Calgary 3,077 1931
12
Ensign Energy Servicesensignenergy.com

A global leader in oilfield services, specializing in land-based drilling and well servicing with a focus on safety, innovation, and exceptional customer experience

Oil and Gas 馃嚚馃嚘 Calgary 3,047 1987
13
Exterranenerflex.com

Specializing in acquisition, Exterran offers innovative solutions Recently acquired by Enerflex Ltd, visit their website for the latest updates

Oil and Gas 馃嚚馃嚘 Calgary 3,012 n/a
14
AltaGas Ltd.altagas.ca

A leading North American infrastructure company connecting customers to affordable and reliable energy solutions with a strong portfolio in growing markets

Oil and Gas 馃嚚馃嚘 Calgary 2,838 1994
15
Precision Drillingprecisiondrilling.com

A leading provider of safe and high-performance services to the oil and gas industry, offering drilling rigs, technology solutions, environmental stewardship, and support services

Oil and Gas 馃嚚馃嚘 Calgary 2,802 n/a

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16
Pembina Pipeline Corporationpembina.com

A dynamic energy transportation and midstream provider in Western Canada, with pipelines, gas facilities, and oil infrastructure prioritizing community engagement and employee well-being

Oil and Gas 馃嚚馃嚘 Calgary 2,464 1954
17
NOVA Chemicalsnovachem.com

Designing and producing high-quality polyethylene resins, investing in recycling infrastructure, and promoting circular economy through innovation and partnerships.

Chemical Manufacturing 馃嚚馃嚘 Calgary 2,342 1975
18
Encana Corporationovintiv.com

A leading North American energy producer focused on growing diverse resource plays, producing natural gas, oil, and natural gas liquids

Oil and Gas 馃嚚馃嚘 Calgary 2,249 2002
19
Bow Valley Collegebowvalleycollege.ca

Leading college in Calgary area, empowering students for in-demand careers in business, health care, technology, and social services through innovative education and research initiatives

Higher Education 馃嚚馃嚘 Calgary 1,825 1965
20
Critical Masscriticalmass.com

Designing brand experiences, full-service digital agency, global presence, working with top brands, data-driven approach, focus on customer experience and innovative technologies

Advertising Services 馃嚚馃嚘 Calgary 1,810 1996
21
Calfrac Well Serviceslinktr.ee

Leading provider of specialized oilfield services, including hydraulic fracturing, coiled tubing, and cementing techniques to increase oil and gas production Operating in North America and Argentina

Oil and Gas 馃嚚馃嚘 Calgary 1,629 1999
22
Parkland Corporationparkland.ca

Global fuel retailer operating thousands of service stations, convenience stores, and renewable energy solutions across North America and the Caribbean.

Oil and Gas 馃嚚馃嚘 Calgary 1,619 1969
23
ENMAXenmax.com

An electricity provider in Alberta for over 100 years, offering safe, reliable energy solutions to warm homes, power businesses, and support communities

Utilities 馃嚚馃嚘 Calgary 1,613 n/a
24
TransAltatransalta.com

A diverse fleet of electrical generation assets in Canada, the US, and Australia, specializing in clean electricity and sustainable practices

Utilities 馃嚚馃嚘 Calgary 1,558 1911
25
SECUREsecure.ca

A Calgary-based company offers solutions in environmental waste management, energy infrastructure, and oilfield services, challenging industry norms with diverse customer-driven services

Oil and Gas 馃嚚馃嚘 Calgary 1,521 2007
26
Trimac Transportationtrimac.com

bulk trucking transportation, maintenance and wash services, logistics outsourcing, transloading, warehousing, and freight management across North America

Truck Transportation 馃嚚馃嚘 Calgary 1,444 1945
27
Enbridge Pipelinesenbridge.com

A North American energy leader specializing in transportation, distribution, and clean energy generation including crude oil, natural gas, and renewables

Oil and Gas 馃嚚馃嚘 Calgary 1,354 n/a
28
Long View Systemslongviewsystems.com

Leading IT solutions provider in North America, specializing in cloud services, IT infrastructure, managed services, and end user support to drive innovative and business-focused solutions

IT Services and IT Consulting 馃嚚馃嚘 Calgary 1,318 1999
29
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 馃嚚馃嚘 Calgary 1,296 n/a
30
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 馃嚚馃嚘 Calgary 1,291 2008

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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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