Open Tenders in Ottawa — 123 Live Today
Data updated September 7, 2026
Ottawa's tender stream has two distinct layers: the City of Ottawa's municipal program — roads, transit, parks, facilities — posted to MERX, and the federal layer, where PSPC, DND, and departments headquartered in the capital tender work that is performed in and around the National Capital Region via CanadaBuys.
The University of Ottawa and the health institutions add steady institutional demand. TenderScan folds the municipal, institutional, and locally-delivered federal streams into the single list below.
Latest open tenders
U66 Trisonic Wind Tunnel - TP01 - Site Work Tender
JSCM Co
MERXCloses September 25, 2026TS / TCSP Transit Services Security Equipment and Maintenance Services
City of Ottawa
MERXCloses September 28, 2026THS - Senior Strategist for DRDC Ottawa
Defence Research and Development Canada (DRDC)
MERXCloses September 10, 2026PWD/RPS/ Supply and Deliver Winter Grit
City of Ottawa
MERXCloses September 24, 202627-002 - Welding, Fabrication and Repair Services - RFSA
Ottawa Carleton District School Board
Bids&TendersCloses September 24, 202627-006 - General Contractors for Construction of Half Moon Bay Secondary School
Ottawa Carleton District School Board
Bids&TendersCloses September 29, 2026IWS/WS Supply, Delivery and Replacement of Granular Activated Carbon
City of Ottawa
MERXCloses September 28, 2026THS - Senior Strategist for DRDC Ottawa
Defence Research and Development Canada (DRDC)
CanadaBuysCloses September 10, 2026Stream 1 : Applications Services
Royal Canadian Mounted Police (RCMP)
MERXCloses September 17, 2026Chairs procurement for DFO at 200 Kent, Ottawa, ON
Department of Fisheries and Oceans (DFO)
MERXCloses September 14, 2026Request for Information - Network Operations Center - Bldg 76 (CJWC Relocation)
Defence Construction Canada - National Capital Region
MERXCloses September 16, 2026High-Pressure Dual Syringe Continuous Flow Pump
Department of Natural Resources (NRCan)
CanadaBuysCloses October 12, 202625-031-R2 - Asbestos Abatement Contractors
Ottawa Carleton District School Board
Bids&TendersCloses September 24, 2026NPP - RH Coats Workplace Transformation & Lighting Energy Improvement
BGIS - RP4
MERXCloses September 29, 2026Security Guard Services 2026
Canada Science and Technology Museum Corporation /
MERXCloses October 6, 2026
Closing within 7 days(45)
Fast Electronic Spectrum analyzer
National Research Council of Canada (NRC)
CanadaBuysCloses September 7, 2026FIRE AND LIFE SAFETY (FLS) SERVICES
Ottawa Community Housing
MERXCloses September 8, 2026IWSD/IS/DCFB CF001832 911 Industrial Avenue Watermain Replacement
City of Ottawa
MERXCloses September 8, 2026IWSD/IS/DCMB CP001068 2025 PXO Projects (Wards 4, 6, 16, 19, and 23)
City of Ottawa
MERXCloses September 8, 2026BLK2- DIV-1.46 - Expression of Interest - Off-Site Storage & Staging Yard
Pomerleau Inc.
MERXCloses September 8, 2026
Most active buyers
- City of Ottawa31 open tenders
- Department of Public Works and Government Services (PSPC)13 open tenders
- National Research Council of Canada (NRC)6 open tenders
- Department of National Defence (DND)5 open tenders
- Ottawa Carleton District School Board5 open tenders
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