Major employers in Thunder Bay

26 employers, 13 of them head offices: 9 worldwide, 0 national and 4 regional. Headcounts are for the site here, with the page that publishes them.

Thunder Bay — the /local page · Who owns Thunder Bay · Who represents Thunder Bay · Companies

Employers26
Worldwide HQ9
National HQ0
Regional HQ4
1

Employers, largest first

People employed at the site in this city where a source publishes it; head offices without a published count follow.

CompanyHereEmployees hereWorldwide HQJobs
St. Joseph's Care GroupHealth care — complex continuing care, rehabilitation, long-term careMajor site2,5002026Thunder Bay, OntarioCareers →
Dilico Anishinabek Family CareHealth and social assistance — Indigenous child, family and health servicesWorldwide HQglobal (Indigenous health, child-welfare and family services across the Robinson-Superior Treaty area)6002026Thunder Bay, OntarioCareers →
TbaytelTelecommunications — wireless and wireline carrierWorldwide HQglobal (Northwestern Ontario telecom: mobility, internet, TV, home phone)4072026Thunder Bay, OntarioCareers →
Community Living Thunder BaySocial assistance — developmental-disability servicesWorldwide HQglobal (supports for people with intellectual disabilities in Thunder Bay)—Thunder Bay, OntarioCareers →
Matawa First Nations ManagementPublic administration — tribal council servicesWorldwide HQglobal (tribal council for nine Matawa First Nations, with corporations incl. KKETS and Matawa Health Co-operative)—Thunder Bay, OntarioCareers →
Nishnawbe Aski NationPublic administration — Indigenous governanceWorldwide HQglobal (political territorial organisation for 49 First Nations; head office in Thunder Bay)—Thunder Bay, OntarioCareers →
North Star AirTransportation — air carrierWorldwide HQglobal (passenger, charter and cargo airline serving northern Ontario communities)—Thunder Bay, OntarioCareers →
NorWest Community Health CentresHealth care — community health centresWorldwide HQglobal (primary-care community health centres in Thunder Bay, Armstrong, Kakabeka and Longlac)—Thunder Bay, Ontario—
Port of Thunder Bay (Thunder Bay Port Authority)Transportation — port authorityWorldwide HQglobal (federal port authority at the head of the Great Lakes–St. Lawrence Seaway)—Thunder Bay, OntarioCareers →
Synergy NorthUtilities — electric power distributionWorldwide HQglobal (local electricity distributor; head office in Thunder Bay)—Thunder Bay, OntarioCareers →
Conseil scolaire de district catholique des Aurores boréalesEducation — French-language elementary and secondary schoolsRegional HQNorthwestern Ontario (French-language Catholic school board; head office in Thunder Bay)—Thunder Bay, OntarioCareers →
District of Thunder Bay Social Services Administration BoardPublic administration — social servicesRegional HQDistrict of Thunder Bay (child care, community housing, homelessness prevention, Ontario Works)—Thunder Bay, OntarioCareers →
Manroc DevelopmentsMining services — underground mine contractingRegional HQcorporate office (head office in Manitouwadge); underground mine contracting — Alimak raising and production, lateral development—Manitouwadge, OntarioCareers →
Thunder Bay District Health UnitHealth care — public healthRegional HQDistrict of Thunder Bay (public health unit; head office in Thunder Bay)—Thunder Bay, OntarioCareers →
Alstom — Thunder Bay siteManufacturing — railway rolling stockpart of Alstom SAMajor site—Saint-Ouen-sur-Seine, FranceCareers →
City of Thunder BayPublic administration — municipal governmentMajor site—Thunder Bay, OntarioCareers →
Confederation CollegeEducation — college of applied arts and technologyMajor site—Thunder Bay, Ontario—
Government of Ontario — Thunder Bay officesPublic administration — provincial governmentpart of Government of OntarioMajor site—Toronto, OntarioCareers →
Lakehead District School BoardEducation — elementary and secondary schoolsMajor site—Thunder Bay, OntarioCareers →
Lakehead UniversityEducation — universityMajor site—Thunder Bay, OntarioCareers →
NOSM UniversityEducation — medical school (university)Major site—Thunder Bay and Sudbury, OntarioCareers →
Thunder Bay Catholic District School BoardEducation — elementary and secondary schoolsMajor site—Thunder Bay, Ontario—
Thunder Bay Police ServicePublic administration — policeMajor site—Thunder Bay, OntarioCareers →
Thunder Bay Pulp and PaperManufacturing — pulp mill and power generationpart of Atlas HoldingsMajor site—Greenwich, ConnecticutCareers →
Thunder Bay Regional Health Sciences CentreHealth care — acute-care teaching hospitalMajor site—Thunder Bay, OntarioCareers →
Thunder Bay TerminalsTransportation — marine bulk terminalpart of Russel MetalsMajor site—Mississauga, OntarioCareers →
i

Notes on this record

  • The Thunder Bay CEDC publishes a list of 'major employers' with links to their job boards but no headcounts; no current numbered top-employer list was found. The last ranked list reported in the press dates from 2012 (on tbnewswatch.com, which returned a Cloudflare challenge, so it was not read or used).
  • CEDC sector pages: about 177 manufacturing businesses (2,244 jobs, 'just over 5% of its labour force'); mining: 'more than 400 local mine service and supply companies', 10 active mines and 18+ major exploration projects nearby, 885 local mining jobs.
  • No venture-funded software or tech company headquartered in Thunder Bay could be confirmed from a company's or investor's own page; Thunder Bay Ventures (a Community Futures lender) offers start-up loans but publishes no portfolio. The press-reported XLV Diagnostics raise (2014) is a medical-device firm and was not verified on its own site.
  • Blocked or skipped: confederationcollege.ca (Cloudflare challenge; row kept from CEDC); tbcschools.ca (robots 'Disallow: /'; row kept from CEDC, no careersUrl); wasaya.com (Wasaya Airways; robots 'Disallow: /'; no row); flytbay.ca (Thunder Bay International Airports Authority; robots.txt unreachable, treated as disallowed; no row); tbrhri.ca (Health Research Institute; robots unreachable; no row); impalacanada.com (Impala Canada, Lac des Iles mine; Cloudflare challenge; no row); tbnewswatch.com (Cloudflare). bearskinairlines.com now redirects to Perimeter Aviation (Winnipeg), so no Thunder Bay row.
  • Clean Air Metals (TSXV: AIR) has a project office in Thunder Bay but its registered head office is in Toronto; not added as a Thunder Bay head office.
  • The former Resolute Forest Products Thunder Bay mill is now Thunder Bay Pulp and Paper (Atlas Holdings, since August 2023).
s

Sources

Prepared 2026-10-30. Each headcount links to the page it is read from; each company to its own site or its /company page.