# List of multinational companies in Ottawa Tamtam tracks 42 multinational companies headquartered in Ottawa. This list ranks the 30 largest by number of employees on LinkedIn, led by Department of National Defence/MinistΓ¨re de la dΓ©fense nationale, Shopify and Canadian Armed Forces | Forces armΓ©es canadiennes. Their median headcount is 925. Half of them were founded in 1982 or later. This list of multinational companies in Ottawa is dominated by government entities and technology firms. The Department of National Defence and the Canadian Armed Forces are among the largest employers, alongside Global Affairs Canada and the Royal Canadian Mounted Police. Significant private sector presence includes Shopify, a software development company empowering retail businesses globally, and Costco Wholesale Canada, a major retailer. Harris Computer also features, providing software solutions across various sectors. The data shows a strong concentration of organizations focused on national security, public administration, and international relations. This is complemented by a robust software development sector, exemplified by companies like Kinaxis, which orchestrates supply chain networks, and Assent, focusing on product compliance. The presence of entities like the Canadian Red Cross indicates a strong non-profit and humanitarian sector. πŸ‡¨πŸ‡¦ Ottawa Β· 30 companies Β· Updated Nov 11, 2026 | # | Company | Industry | Headquarters | Employees | Founded | |---|---|---|---|---|---| | 1 | [Department of National Defence/MinistΓ¨re de la dΓ©fense nationale](https://www.tamtam.ai/c/department-of-national-defence-ministere-de-la-defense-nationale) (canada.ca)
A government department in Canada responsible for defending national interests, contributing to international peace and security, and supporting the Canadian Forces | Armed Forces | πŸ‡¨πŸ‡¦ Ottawa | 28,747 | | | 2 | [Shopify](https://www.tamtam.ai/c/shopify) (shopify.com)
Provides trusted tools to start, grow, market, and manage a retail business of any size, powering millions of businesses across 175 countries. | Software Development | πŸ‡¨πŸ‡¦ Ottawa | 28,526 | 2006 | | 3 | [Canadian Armed Forces \| Forces armΓ©es canadiennes](https://www.tamtam.ai/c/canadian-armed-forces-forces-armees-canadiennes) (forces.ca)
Offering over 100 trades, the organization provides world-class qualifications, competitive salaries, benefits, stability, and exciting opportunities for travel, adventure, and making a difference | Armed Forces | πŸ‡¨πŸ‡¦ Ottawa | 20,412 | | | 4 | [Global Affairs Canada \| Affaires mondiales Canada](https://www.tamtam.ai/c/global-affairs-canada-affaires-mondiales-canada) (international.gc.ca)
Manage diplomatic and consular relations, promote international trade, lead international development and humanitarian assistance efforts for Canada. | Government Administration | πŸ‡¨πŸ‡¦ Ottawa | 7,379 | 1909 | | 5 | [Royal Canadian Mounted Police \| Gendarmerie royale du Canada](https://www.tamtam.ai/c/royal-canadian-mounted-police-gendarmerie-royale-du-canada) (rcmp.ca)
A national police service in Canada, providing policing at international, federal, provincial, and municipal levels Offers diverse career opportunities and promotes community safety | Law Enforcement | πŸ‡¨πŸ‡¦ Ottawa | 5,068 | | | 6 | [Canadian Red Cross](https://www.tamtam.ai/c/canadian-red-cross) (redcross.ca)
An organization within the International Red Cross and Red Crescent Movement providing disaster relief, emergency response, prevention training, capacity building, and community health services | Non-profit Organizations | πŸ‡¨πŸ‡¦ Ottawa | 4,268 | | | 7 | [Costco Wholesale Canada](https://www.tamtam.ai/c/costco-wholesale-canada) (costco.ca)
Global retailer with warehouse club operations in 8 countries, known for quality, value, and ethical business practices Family-oriented atmosphere for employee success | Wholesale | πŸ‡¨πŸ‡¦ Ottawa | 4,127 | 1983 | | 8 | [Harris Computer](https://www.tamtam.ai/c/harris-computer) (harriscomputer.com)
Provides mission-critical software solutions for public sector, healthcare, utilities, and private sectors across North America, Europe, Asia, Australia. | Software Development | πŸ‡¨πŸ‡¦ Ottawa | 2,929 | 1976 | | 9 | [Kinaxis](https://www.tamtam.ai/c/kinaxis) (kinaxis.com)
Empowering businesses to orchestrate their entire supply chain network, from long-term planning to real-time execution and delivery. | Software Development | πŸ‡¨πŸ‡¦ Ottawa | 2,322 | | | 10 | [Embassy of Canada \| Ambassade du Canada](https://www.tamtam.ai/c/embassy-of-canada-ambassade-du-canada) (international.gc.ca)
This organization manages Canada's diplomatic relations, international trade, development efforts, and humanitarian assistance while advancing national interests and values globally | International Affairs | πŸ‡¨πŸ‡¦ Ottawa | 1,803 | 1909 | | 11 | [Canadian Forces Morale and Welfare Services](https://www.tamtam.ai/c/canadian-forces-morale-and-welfare-services) (cfmws.ca)
The company supports Canadian Armed Forces members and their families worldwide with fitness, recreation, family support, retail, and financial services | Wellness and Fitness Services | πŸ‡¨πŸ‡¦ Ottawa | 1,407 | 1996 | | 12 | [Calian Group](https://www.tamtam.ai/c/calian-group) (calian.com)
Employees engineer reliable solutions solving complex problems for healthcare, communications, learning, and security sectors. Diverse products, services and solutions globally. | Strategic Management Services | πŸ‡¨πŸ‡¦ Ottawa | 1,396 | 1982 | | 13 | [Assent](https://www.tamtam.ai/c/assent) (assent.com)
Provides an AI-native platform for product compliance, sustainability, responsible sourcing, and trade compliance, helping manufacturers reduce supply chain risk and manage data. | Software Development | πŸ‡¨πŸ‡¦ Ottawa | 1,052 | 2010 | | 14 | [Corel Corporation](https://www.tamtam.ai/c/corel-corporation) (corel.com)
Develops and markets graphics, productivity, and digital media software products for creative professionals and consumers worldwide. | Software Development | πŸ‡¨πŸ‡¦ Ottawa | 994 | 1985 | | 15 | [Canadian Bank Note Company, Limited](https://www.tamtam.ai/c/canadian-bank-note-company-limited) (cbnco.com)
The company specializes in providing secure identification solutions, including currency, passports, driver licenses, and biometric solutions, to prevent fraud globally | IT Services and IT Consulting | πŸ‡¨πŸ‡¦ Ottawa | 925 | 1897 | | 16 | [Royal Canadian Mint](https://www.tamtam.ai/c/royal-canadian-mint) (mint.ca)
The company is a for-profit Crown Corporation responsible for producing coins, managing coinage systems, providing advice on coinage matters, and marketing bullion products | Mining | πŸ‡¨πŸ‡¦ Ottawa | 876 | 1908 | | 17 | [Nutrition International](https://www.tamtam.ai/c/nutrition-international) (nutritionintl.org)
Global organization delivering proven nutrition interventions in over 60 countries, conducting research, shaping policy, and integrating nutrition into development programs | Non-profit Organizations | πŸ‡¨πŸ‡¦ Ottawa | 743 | 1992 | | 18 | [Cowater International](https://www.tamtam.ai/c/cowater-international) (cowater.com)
Global leader in management consulting focusing on developing and emerging economies Specializing in sustainable solutions for governments, organizations, and communities to create lasting impacts | International Trade and Development | πŸ‡¨πŸ‡¦ Ottawa | 712 | 1984 | | 19 | [Digital Opportunity Trust](https://www.tamtam.ai/c/digital-opportunity-trust) (dotrust.org)
Support youth innovators to develop and apply digital solutions, collaborating with sectors to drive inclusive community transformation globally. | Non-profit Organizations | πŸ‡¨πŸ‡¦ Ottawa | 695 | 2001 | | 20 | [World University Service of Canada (WUSC - EUMC)](https://www.tamtam.ai/c/world-university-service-of-canada-wusc-eumc) (wusc.ca)
A Canadian non-profit organization empowering youth worldwide through education, economic opportunities, and resettlement support for student refugees | International Trade and Development | πŸ‡¨πŸ‡¦ Ottawa | 653 | 1957 | | 21 | [Canadian Army \| ArmΓ©e canadienne](https://www.tamtam.ai/c/canadian-army-armee-canadienne) (canada.ca)
The Canadian Army is the land component of the Canadian Armed Forces, producing well-trained soldiers ready for operations at home and abroad | Armed Forces | πŸ‡¨πŸ‡¦ Ottawa | 565 | | | 22 | [Versaterm](https://www.tamtam.ai/c/versaterm) (versaterm.com)
Design and delivery of purpose-built platform solutions enhancing community safety through efficient incident management, fostering just outcomes, and improving emergency response experiences. | Software Development | πŸ‡¨πŸ‡¦ Ottawa | 542 | 1977 | | 23 | [Alludo](https://www.tamtam.ai/c/alludo) (alludo.com)
A global technology company providing professional graphics, virtualization, and productivity solutions tailored for the digital remote workforce, enabling creative and collaborative work anytime, anywhere | Software Development | πŸ‡¨πŸ‡¦ Ottawa | 536 | | | 24 | [Pythian](https://www.tamtam.ai/c/pythian) (pythian.com)
A global data and analytics services company founded in 1997, specializing in helping organizations transform through data, analytics, and cloud solutions | IT Services and IT Consulting | πŸ‡¨πŸ‡¦ Ottawa | 526 | 1997 | | 25 | [Accreditation Canada](https://www.tamtam.ai/c/accreditation-canada) (accreditation.ca)
Company provides innovative programs tailored to local needs, empowering organizations to meet national and global standards for safe, high-quality care through specialized accreditation and certification programs | Health and Human Services | πŸ‡¨πŸ‡¦ Ottawa | 510 | 1958 | | 26 | [March Networks](https://www.tamtam.ai/c/march-networks) (marchnetworks.com)
Secure cloud-based video solutions integrating POS and ATM systems, enhancing security, operational efficiency, and business insights globally. | Software Development | πŸ‡¨πŸ‡¦ Ottawa | 479 | | | 27 | [JSI](https://www.tamtam.ai/c/jsi-ottawa) (jsitelecom.com)
A trusted provider of lawful intelligence and AI-enabled analytics solutions, helping law enforcement and security agencies globally with critical missions | Software Development | πŸ‡¨πŸ‡¦ Ottawa | 470 | 1979 | | 28 | [Croix-Rouge canadienne](https://www.tamtam.ai/c/croix-rouge-canadienne) (croixrouge.ca)
The company helps people and communities in need in Canada and around the world, strengthening their resilience through fundamental principles | Philanthropic Fundraising Services | πŸ‡¨πŸ‡¦ Ottawa | 425 | 1896 | | 29 | [Cuso International](https://www.tamtam.ai/c/cuso-international) (cusointernational.org)
An international organization focused on creating economic and social opportunities for marginalized groups through gender equality, social inclusion, and climate action | Non-profit Organizations | πŸ‡¨πŸ‡¦ Ottawa | 419 | 1961 | | 30 | [Babcock Canada Inc.](https://www.tamtam.ai/c/babcock-canada-inc) (babcockcanada.com)
A leading international Aerospace, Defence, and Security company providing submarine sustainment, aviation services, aerial wildfire suppression, air medical transportation, and aircrew training | Defense and Space Manufacturing | πŸ‡¨πŸ‡¦ Ottawa | 407 | 2008 | ## 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 Ottawa - [The largest companies in Ottawa](https://www.tamtam.ai/l/largest-companies-ottawa) (350) - [Public sector organisations in Ottawa](https://www.tamtam.ai/l/public-sector-organisations-ottawa) (49) - [Critical infrastructure operators in Ottawa](https://www.tamtam.ai/l/critical-infrastructure-operators-ottawa) (30) - [Education providers in Ottawa](https://www.tamtam.ai/l/education-companies-ottawa) (30) - [Government Administration companies in Ottawa](https://www.tamtam.ai/l/government-administration-companies-ottawa) (30) ## The same list elsewhere in Canada - [Multinational companies in Canada](https://www.tamtam.ai/l/multinational-companies-canada) (1,934) - [Multinational companies in Ontario](https://www.tamtam.ai/l/multinational-companies-ontario) (901) - [Multinational companies in the province of Quebec](https://www.tamtam.ai/l/multinational-companies-province-of-quebec) (386) - [Multinational companies in British Columbia](https://www.tamtam.ai/l/multinational-companies-british-columbia) (260) - [Multinational companies in Alberta](https://www.tamtam.ai/l/multinational-companies-alberta) (240) - [Multinational companies in Manitoba](https://www.tamtam.ai/l/multinational-companies-manitoba) (42) - [Multinational companies in Toronto](https://www.tamtam.ai/l/multinational-companies-toronto) (377) - [Multinational companies in Montreal](https://www.tamtam.ai/l/multinational-companies-montreal) (203) - [Multinational companies in Vancouver](https://www.tamtam.ai/l/multinational-companies-vancouver) (138) - [Multinational companies in Calgary](https://www.tamtam.ai/l/multinational-companies-calgary) (130) - [Multinational companies in Mississauga](https://www.tamtam.ai/l/multinational-companies-mississauga) (119) - [Multinational companies in Edmonton](https://www.tamtam.ai/l/multinational-companies-edmonton) (47) - [Multinational companies in Markham](https://www.tamtam.ai/l/multinational-companies-markham) (37) - [Multinational companies in Vaughan](https://www.tamtam.ai/l/multinational-companies-vaughan) (32) - [Multinational companies in Winnipeg](https://www.tamtam.ai/l/multinational-companies-winnipeg) (32) - [Multinational companies in Brampton](https://www.tamtam.ai/l/multinational-companies-brampton) (30) - [Multinational companies in Richmond](https://www.tamtam.ai/l/multinational-companies-richmond) (27) --- Source: https://www.tamtam.ai/l/multinational-companies-ottawa