Tenders
Open federal tenders
843 notices are open and match your filters. Data refreshed from CanadaBuys every two hours.
| Notice | Type | Category | |||
|---|---|---|---|---|---|
| NPP – S6132030 - THS SA – One (1) 5.1 Computer, application support. Temporary Help Services against the Supply Arrangement for the National Capital Region(NCR). cb-598-71734233 | Department of National Defence (DND) | RFP against Supply Arrangement | Management and business services | Oct 14, 2026 | Oct 28, 2026 10 days left |
| Liri Valley Apartments and Rowhouses MX-444140764015 | Defence Construction Canada - Western Region | Not specified | Construction | Aug 25, 2026 | Oct 28, 2026 10 days left |
| NPP – S6176774 - THS SA – One (1) 10.1 Communications. Temporary Help Services against the Supply Arrangement for the National Capital Region(NCR). cb-607-39964429 | Department of National Defence (DND) | RFP against Supply Arrangement | Management and business services | Oct 14, 2026 | Oct 28, 2026 10 days left |
| Maintenance Compound Electrical Distribution, Riding Mountain National Park cb-423-21057659 | Parks Canada Agency (PC) | Request for Proposal | Building and construction services | Oct 13, 2026 | Oct 28, 2026 10 days left |
| ACAN - KOBRA Solid State Drive (SSD) High Security Disintegrator cb-506-33518494 | Department of National Defence (DND) | ACAN | Office equipment and supplies | Oct 13, 2026 | Oct 28, 2026 10 days left |
| Office Furniture: Categories 1, 2,3,4,5 and 6 Jasper National Park cb-957-88702220 | Parks Canada Agency (PC) | Request for Proposal | Furniture and furnishings | Oct 14, 2026 | Oct 28, 2026 10 days left |
| INVITATION TO SUBMIT AN EXPRESSION OF INTEREST (EOI) - Office Space cb-165-48643758 | Department of Public Works and Government Services (PSPC) | Request for Information | Management and business services | Oct 7, 2026 | Oct 28, 2026 10 days left |
| Stage 2 -Amishku-Shipiss-Kigiap Konga - Beaver Brook Camp-Akami−Uapishkᵘ−KakKasuak−Mealy Mountains National Park Reserve cb-449-11478446 | Parks Canada Agency (PC) | Request for Proposal | Building and construction services | Oct 6, 2026 | Oct 29, 2026 11 days left |
| Purchase of 3 tractors under a Supply Arrangement cb-73-75026 | Parks Canada Agency (PC) | RFP against Supply Arrangement | Commercial and military vehicles | Oct 14, 2026 | Oct 29, 2026 11 days left |
| SAR AIR DROPPABLE PUMP SPARING ITEMS cb-599-42160180 | Department of National Defence (DND) | Request for Proposal | Commercial and military vehicles | Oct 14, 2026 | Oct 29, 2026 11 days left |
| Multiple Victoria-Class Spares: Packing Retainer, Gaskets, Packing Assembly, Valves, Starter, Motor; Interval Timer, Expansion Joint, Pipe, O-Ring cb-846-4887686 | Department of National Defence (DND) | Request for Proposal | Manufacturing components | Sep 15, 2026 | Oct 29, 2026 11 days left |
| Material Disposal - Codroy NL cb-270-96481094 | Department of Fisheries and Oceans (DFO) | Invitation to Qualify | Building and construction services | Oct 15, 2026 | Oct 29, 2026 11 days left |
| Floating Dock Approach Reconstruction, Chance Cove NL cb-270-97552385 | Department of Fisheries and Oceans (DFO) | Invitation to Qualify | Building and construction services | Oct 15, 2026 | Oct 29, 2026 11 days left |
| BOCLE (Ball-On-Cylinder Lubricity Evaluator) Replacement cb-378-70674287 | Department of National Defence (DND) | Request for Proposal | Laboratory and measuring equipment | Sep 29, 2026 | Oct 29, 2026 11 days left |
| Internal Control over Financial Management assessment of Information Technology General Controls (ITGC) cb-689-42455612 | Department of Transport (TC) | RFP against Supply Arrangement | Financial and insurance services | Oct 14, 2026 | Oct 29, 2026 11 days left |
| 50100-260001 - RISO - Meat, Fish and Poultry WS5745891192-Doc5745908949 | Department of Public Works and Government Services (PSPC) | Standing Offer | Food and beverages | Jul 6, 2026 | Oct 29, 2026 11 days left |
| EQ754-270295 - Nassau Mills Dam at Lock 22 Replacement WS5881296127-Doc5881315907 | Department of Public Works and Government Services (PSPC) | Request for Proposal | Chemicals | Sep 24, 2026 | Oct 29, 2026 11 days left |
| E60PR-26PATR RFSO Parkas and trousers WS5728595793-Doc5728695299 | Department of Public Works and Government Services (PSPC) | Standing Offer | Apparel and luggage | Jun 5, 2026 | Oct 29, 2026 11 days left |
| Tire Servicing Equipment cb-577-38619784 | Department of National Defence (DND) | Request for Proposal | Commercial and military vehicles | Sep 22, 2026 | Oct 29, 2026 11 days left |
| W0113-27CS33 Snow Rush Exercise (Northern Ontario) WS5907995649-Doc5908338690 | Department of Public Works and Government Services (PSPC) | Request for Proposal | Travel and hospitality services | Sep 29, 2026 | Oct 29, 2026 11 days left |
| Design – Marsh Viewing Tower, Point Pelee National Park cb-803-8436037 | Parks Canada Agency (PC) | Request for Proposal | Engineering and research services | Oct 9, 2026 | Oct 29, 2026 11 days left |
| RFI - WildFireSat Global WS5708909900-Doc5708939208 | Department of Public Works and Government Services (PSPC) | Request for Information | Commercial and military vehicles | May 22, 2026 | Oct 29, 2026 11 days left |
| Network Cisco Nexus Equipement on the Colocation Data Centre (CDC) WS5895380777-Doc5930485169 | Department of Public Works and Government Services (PSPC) | Request for Proposal | Power generation machinery | Oct 14, 2026 | Oct 29, 2026 11 days left |
| G9292-271166-A WS5755477339 TBIPS myEMS SAP Solution WS5755477339-Doc5900896639 | Department of Public Works and Government Services (PSPC) | RFP against Supply Arrangement | Management and business services | Oct 2, 2026 | Oct 29, 2026 11 days left |
| EB144-270756 - Canso Canal Hydraulic Assessment and Leatherback Turtle Migratory Feasibility Study WS5919429969-Doc5919574310 | Department of Public Works and Government Services (PSPC) | RFP against Supply Arrangement | Engineering and research services | Oct 7, 2026 | Oct 29, 2026 11 days left |
| Advanced Homemade Explosives Training cb-403-25493706 | Department of National Defence (DND) | Request for Proposal | Education and training services | Sep 28, 2026 | Oct 29, 2026 11 days left |
| Intrusion Alarm System Upgrade, Saint-Hyacinthe, Quebec WS5919827871-Doc5919905893 | Department of Public Works and Government Services (PSPC) | Request for Proposal | Building and construction services | Oct 7, 2026 | Oct 29, 2026 11 days left |
| TBIPS - ORACLE/MS SQL Server Database Administration And Support - PSIB cb-808-71346390 | Department of Indigenous Services (ISC) | RFP against Supply Arrangement | Engineering and research services | Sep 15, 2026 | Oct 29, 2026 11 days left |
| Phase 2 EZ899-270723 - Catenary Lighting Upgrade to LED WS5890300538-Doc5930961203 | Department of Public Works and Government Services (PSPC) | Invitation to Qualify | Building and construction services | Oct 14, 2026 | Oct 29, 2026 11 days left |
| Canadian Student Alcohol and Drugs Survey (CSADS). WS5869934399-Doc5885635305 | Department of Public Works and Government Services (PSPC) | Request for Proposal | Engineering and research services | Sep 24, 2026 | Oct 29, 2026 11 days left |
| RF Data Fusion for Command and Control cb-846-73690703 | Department of Public Works and Government Services (PSPC) | Request for Proposal | Information technology | Sep 10, 2026 | Oct 29, 2026 11 days left |
| RFP_IT_Maximo Spare Parts Tool_Phase 1_2026 MX-444150458321 | Canada Post Corporation | Not specified | Services | Sep 3, 2026 | Oct 29, 2026 11 days left |
| EP076-270289 Sir Frederick Banting Building Fire Alarm System Improvements WS5874930736-Doc5875076407 | Department of Public Works and Government Services (PSPC) | Request for Proposal | Security and defence | Sep 16, 2026 | Oct 29, 2026 11 days left |
| RELEASE,CARGO PARACHUTE,AERIAL DELIVERY cb-345-78516930 | Department of National Defence (DND) | Request for Proposal | Commercial and military vehicles | Oct 14, 2026 | Oct 29, 2026 11 days left |
| SUBMARINE MATERIAL CERTIFICATION POLICY AND COURSE MANAGEMENT AND DELIVERY cb-445-71910640 | Department of National Defence (DND) | Request for Proposal | Commercial and military vehicles | Oct 14, 2026 | Oct 29, 2026 11 days left |
| Spare Parts for Material Handling Equipment 5 cb-114-38058425 | Department of National Defence (DND) | Request for Proposal | Material handling and storage | Oct 14, 2026 | Oct 29, 2026 11 days left |
| AC Motor cb-656-2904789 | Department of National Defence (DND) | Request for Proposal | Power generation machinery | Oct 14, 2026 | Oct 29, 2026 11 days left |
| PACKING WITH RETAINER cb-777-93885821 | Department of National Defence (DND) | Request for Proposal | Manufacturing components | Oct 15, 2026 | Oct 29, 2026 11 days left |
| Green pump laser for femtosecond-duration Titanium:sapphire laser osillator cb-964-92979882 | National Research Council of Canada (NRC) | ACAN | Laboratory and measuring equipment | Oct 13, 2026 | Oct 29, 2026 11 days left |
| RFP - Workstations - Toronto cb-65-70930577 | Courts Administration Service (CAS) | RFP against Supply Arrangement | Furniture and furnishings | Oct 16, 2026 | Oct 29, 2026 11 days left |
| T2062-260010 Aviation Firefighting Foam Concentrate WS5919992491-Doc5932467940 | Department of Public Works and Government Services (PSPC) | Request for Proposal | Commercial and military vehicles | Oct 14, 2026 | Oct 29, 2026 11 days left |
| Department of Justice Canada - CAT 1,2,3,5,6 Office Furniture cb-117-75823585 | Department of Justice (JUS) | RFP against Supply Arrangement | Furniture and furnishings | Oct 15, 2026 | Oct 29, 2026 11 days left |
| Basic Military Qualifications Facilities at CFB Borden MX-444125677464 | Defence Construction Canada / Construction de Défense Canada | Not specified | Construction | Aug 11, 2026 | Oct 29, 2026 11 days left |
| 23137-260510 B - Northern Forestry Centre Fire-Rated Door Replacement WS5434602427-Doc5762262875 | Department of Public Works and Government Services (PSPC) | Request for Proposal | Building materials | Jul 9, 2026 | Oct 29, 2026 11 days left |
| Float Camp Rehabilitation, Gwaii Haanas National Marine Conservation Area cb-347-76248174 | Parks Canada Agency (PC) | Request for Proposal | Building and construction services | Sep 28, 2026 | Oct 29, 2026 11 days left |
| Laser Engraving Machine cb-136-46854795 | Department of National Defence (DND) | Request for Proposal | Industrial manufacturing machinery | Oct 14, 2026 | Oct 29, 2026 11 days left |
| Access Control System, Jasper National Park cb-865-98394175 | Parks Canada Agency (PC) | RFP against Supply Arrangement | Security and defence | Oct 14, 2026 | Oct 29, 2026 11 days left |
| Portable Centrifuge Lube Oil Purifiers cb-303-24362411 | Department of National Defence (DND) | Request for Proposal | Distribution systems | Sep 11, 2026 | Oct 29, 2026 11 days left |
| Legislative and Regulatory Analysis of iGaming cb-936-40335980 | Government of the Northwest Territories (GNWT) | Request for Proposal | Management and business services | Oct 9, 2026 | Oct 29, 2026 11 days left |
| Angik & Helen Kalvak School Renovation Design cb-386-12916730 | Government of the Northwest Territories (GNWT) | Request for Proposal | Engineering and research services | Oct 1, 2026 | Oct 29, 2026 11 days left |
- NPP – S6132030 - THS SA – One (1) 5.1 Computer, application support. Temporary Help Services against the Supply Arrangement for the National Capital Region(NCR).
cb-598-71734233
- Department
- Department of National Defence (DND)
- Type
- RFP against Supply Arrangement
- Closes
- Oct 28, 2026, 15:00 UTC
10 days left - Liri Valley Apartments and Rowhouses
MX-444140764015
- Department
- Defence Construction Canada - Western Region
- Type
- Not specified
- Closes
- Oct 28, 2026, 16:00 UTC
10 days left - NPP – S6176774 - THS SA – One (1) 10.1 Communications. Temporary Help Services against the Supply Arrangement for the National Capital Region(NCR).
cb-607-39964429
- Department
- Department of National Defence (DND)
- Type
- RFP against Supply Arrangement
- Closes
- Oct 28, 2026, 16:00 UTC
10 days left - Maintenance Compound Electrical Distribution, Riding Mountain National Park
cb-423-21057659
- Department
- Parks Canada Agency (PC)
- Type
- Request for Proposal
- Closes
- Oct 28, 2026, 16:00 UTC
10 days left - ACAN - KOBRA Solid State Drive (SSD) High Security Disintegrator
cb-506-33518494
- Department
- Department of National Defence (DND)
- Type
- ACAN
- Closes
- Oct 28, 2026, 16:00 UTC
10 days left - Office Furniture: Categories 1, 2,3,4,5 and 6 Jasper National Park
cb-957-88702220
- Department
- Parks Canada Agency (PC)
- Type
- Request for Proposal
- Closes
- Oct 28, 2026, 16:00 UTC
10 days left - INVITATION TO SUBMIT AN EXPRESSION OF INTEREST (EOI) - Office Space
cb-165-48643758
- Department
- Department of Public Works and Government Services (PSPC)
- Type
- Request for Information
- Closes
- Oct 28, 2026, 18:00 UTC
10 days left - Stage 2 -Amishku-Shipiss-Kigiap Konga - Beaver Brook Camp-Akami−Uapishkᵘ−KakKasuak−Mealy Mountains National Park Reserve
cb-449-11478446
- Department
- Parks Canada Agency (PC)
- Type
- Request for Proposal
- Closes
- Oct 29, 2026, 12:30 UTC
11 days left - Purchase of 3 tractors under a Supply Arrangement
cb-73-75026
- Department
- Parks Canada Agency (PC)
- Type
- RFP against Supply Arrangement
- Closes
- Oct 29, 2026, 14:00 UTC
11 days left - SAR AIR DROPPABLE PUMP SPARING ITEMS
cb-599-42160180
- Department
- Department of National Defence (DND)
- Type
- Request for Proposal
- Closes
- Oct 29, 2026, 14:00 UTC
11 days left - Multiple Victoria-Class Spares: Packing Retainer, Gaskets, Packing Assembly, Valves, Starter, Motor; Interval Timer, Expansion Joint, Pipe, O-Ring
cb-846-4887686
- Department
- Department of National Defence (DND)
- Type
- Request for Proposal
- Closes
- Oct 29, 2026, 14:00 UTC
11 days left - Material Disposal - Codroy NL
cb-270-96481094
- Department
- Department of Fisheries and Oceans (DFO)
- Type
- Invitation to Qualify
- Closes
- Oct 29, 2026, 14:00 UTC
11 days left - Floating Dock Approach Reconstruction, Chance Cove NL
cb-270-97552385
- Department
- Department of Fisheries and Oceans (DFO)
- Type
- Invitation to Qualify
- Closes
- Oct 29, 2026, 14:00 UTC
11 days left - BOCLE (Ball-On-Cylinder Lubricity Evaluator) Replacement
cb-378-70674287
- Department
- Department of National Defence (DND)
- Type
- Request for Proposal
- Closes
- Oct 29, 2026, 14:00 UTC
11 days left - Internal Control over Financial Management assessment of Information Technology General Controls (ITGC)
cb-689-42455612
- Department
- Department of Transport (TC)
- Type
- RFP against Supply Arrangement
- Closes
- Oct 29, 2026, 14:00 UTC
11 days left - 50100-260001 - RISO - Meat, Fish and Poultry
WS5745891192-Doc5745908949
- Department
- Department of Public Works and Government Services (PSPC)
- Type
- Standing Offer
- Closes
- Oct 29, 2026, 14:00 UTC
11 days left - EQ754-270295 - Nassau Mills Dam at Lock 22 Replacement
WS5881296127-Doc5881315907
- Department
- Department of Public Works and Government Services (PSPC)
- Type
- Request for Proposal
- Closes
- Oct 29, 2026, 14:00 UTC
11 days left - E60PR-26PATR RFSO Parkas and trousers
WS5728595793-Doc5728695299
- Department
- Department of Public Works and Government Services (PSPC)
- Type
- Standing Offer
- Closes
- Oct 29, 2026, 14:00 UTC
11 days left - Tire Servicing Equipment
cb-577-38619784
- Department
- Department of National Defence (DND)
- Type
- Request for Proposal
- Closes
- Oct 29, 2026, 14:00 UTC
11 days left - W0113-27CS33 Snow Rush Exercise (Northern Ontario)
WS5907995649-Doc5908338690
- Department
- Department of Public Works and Government Services (PSPC)
- Type
- Request for Proposal
- Closes
- Oct 29, 2026, 14:00 UTC
11 days left - Design – Marsh Viewing Tower, Point Pelee National Park
cb-803-8436037
- Department
- Parks Canada Agency (PC)
- Type
- Request for Proposal
- Closes
- Oct 29, 2026, 14:00 UTC
11 days left - RFI - WildFireSat Global
WS5708909900-Doc5708939208
- Department
- Department of Public Works and Government Services (PSPC)
- Type
- Request for Information
- Closes
- Oct 29, 2026, 14:00 UTC
11 days left - Network Cisco Nexus Equipement on the Colocation Data Centre (CDC)
WS5895380777-Doc5930485169
- Department
- Department of Public Works and Government Services (PSPC)
- Type
- Request for Proposal
- Closes
- Oct 29, 2026, 14:00 UTC
11 days left - G9292-271166-A WS5755477339 TBIPS myEMS SAP Solution
WS5755477339-Doc5900896639
- Department
- Department of Public Works and Government Services (PSPC)
- Type
- RFP against Supply Arrangement
- Closes
- Oct 29, 2026, 14:00 UTC
11 days left - EB144-270756 - Canso Canal Hydraulic Assessment and Leatherback Turtle Migratory Feasibility Study
WS5919429969-Doc5919574310
- Department
- Department of Public Works and Government Services (PSPC)
- Type
- RFP against Supply Arrangement
- Closes
- Oct 29, 2026, 14:00 UTC
11 days left - Advanced Homemade Explosives Training
cb-403-25493706
- Department
- Department of National Defence (DND)
- Type
- Request for Proposal
- Closes
- Oct 29, 2026, 14:00 UTC
11 days left - Intrusion Alarm System Upgrade, Saint-Hyacinthe, Quebec
WS5919827871-Doc5919905893
- Department
- Department of Public Works and Government Services (PSPC)
- Type
- Request for Proposal
- Closes
- Oct 29, 2026, 14:00 UTC
11 days left - TBIPS - ORACLE/MS SQL Server Database Administration And Support - PSIB
cb-808-71346390
- Department
- Department of Indigenous Services (ISC)
- Type
- RFP against Supply Arrangement
- Closes
- Oct 29, 2026, 14:00 UTC
11 days left - Phase 2 EZ899-270723 - Catenary Lighting Upgrade to LED
WS5890300538-Doc5930961203
- Department
- Department of Public Works and Government Services (PSPC)
- Type
- Invitation to Qualify
- Closes
- Oct 29, 2026, 14:00 UTC
11 days left - Canadian Student Alcohol and Drugs Survey (CSADS).
WS5869934399-Doc5885635305
- Department
- Department of Public Works and Government Services (PSPC)
- Type
- Request for Proposal
- Closes
- Oct 29, 2026, 14:00 UTC
11 days left - RF Data Fusion for Command and Control
cb-846-73690703
- Department
- Department of Public Works and Government Services (PSPC)
- Type
- Request for Proposal
- Closes
- Oct 29, 2026, 14:00 UTC
11 days left - RFP_IT_Maximo Spare Parts Tool_Phase 1_2026
MX-444150458321
- Department
- Canada Post Corporation
- Type
- Not specified
- Closes
- Oct 29, 2026, 14:00 UTC
11 days left - EP076-270289 Sir Frederick Banting Building Fire Alarm System Improvements
WS5874930736-Doc5875076407
- Department
- Department of Public Works and Government Services (PSPC)
- Type
- Request for Proposal
- Closes
- Oct 29, 2026, 14:00 UTC
11 days left - RELEASE,CARGO PARACHUTE,AERIAL DELIVERY
cb-345-78516930
- Department
- Department of National Defence (DND)
- Type
- Request for Proposal
- Closes
- Oct 29, 2026, 14:00 UTC
11 days left - SUBMARINE MATERIAL CERTIFICATION POLICY AND COURSE MANAGEMENT AND DELIVERY
cb-445-71910640
- Department
- Department of National Defence (DND)
- Type
- Request for Proposal
- Closes
- Oct 29, 2026, 14:00 UTC
11 days left - Spare Parts for Material Handling Equipment 5
cb-114-38058425
- Department
- Department of National Defence (DND)
- Type
- Request for Proposal
- Closes
- Oct 29, 2026, 14:00 UTC
11 days left - AC Motor
cb-656-2904789
- Department
- Department of National Defence (DND)
- Type
- Request for Proposal
- Closes
- Oct 29, 2026, 14:00 UTC
11 days left - PACKING WITH RETAINER
cb-777-93885821
- Department
- Department of National Defence (DND)
- Type
- Request for Proposal
- Closes
- Oct 29, 2026, 14:00 UTC
11 days left - Green pump laser for femtosecond-duration Titanium:sapphire laser osillator
cb-964-92979882
- Department
- National Research Council of Canada (NRC)
- Type
- ACAN
- Closes
- Oct 29, 2026, 14:00 UTC
11 days left - RFP - Workstations - Toronto
cb-65-70930577
- Department
- Courts Administration Service (CAS)
- Type
- RFP against Supply Arrangement
- Closes
- Oct 29, 2026, 14:00 UTC
11 days left - T2062-260010 Aviation Firefighting Foam Concentrate
WS5919992491-Doc5932467940
- Department
- Department of Public Works and Government Services (PSPC)
- Type
- Request for Proposal
- Closes
- Oct 29, 2026, 14:00 UTC
11 days left - Department of Justice Canada - CAT 1,2,3,5,6 Office Furniture
cb-117-75823585
- Department
- Department of Justice (JUS)
- Type
- RFP against Supply Arrangement
- Closes
- Oct 29, 2026, 14:00 UTC
11 days left - Basic Military Qualifications Facilities at CFB Borden
MX-444125677464
- Department
- Defence Construction Canada / Construction de Défense Canada
- Type
- Not specified
- Closes
- Oct 29, 2026, 14:00 UTC
11 days left - 23137-260510 B - Northern Forestry Centre Fire-Rated Door Replacement
WS5434602427-Doc5762262875
- Department
- Department of Public Works and Government Services (PSPC)
- Type
- Request for Proposal
- Closes
- Oct 29, 2026, 16:00 UTC
11 days left - Float Camp Rehabilitation, Gwaii Haanas National Marine Conservation Area
cb-347-76248174
- Department
- Parks Canada Agency (PC)
- Type
- Request for Proposal
- Closes
- Oct 29, 2026, 16:00 UTC
11 days left - Laser Engraving Machine
cb-136-46854795
- Department
- Department of National Defence (DND)
- Type
- Request for Proposal
- Closes
- Oct 29, 2026, 16:00 UTC
11 days left - Access Control System, Jasper National Park
cb-865-98394175
- Department
- Parks Canada Agency (PC)
- Type
- RFP against Supply Arrangement
- Closes
- Oct 29, 2026, 16:00 UTC
11 days left - Portable Centrifuge Lube Oil Purifiers
cb-303-24362411
- Department
- Department of National Defence (DND)
- Type
- Request for Proposal
- Closes
- Oct 29, 2026, 17:00 UTC
11 days left - Legislative and Regulatory Analysis of iGaming
cb-936-40335980
- Department
- Government of the Northwest Territories (GNWT)
- Type
- Request for Proposal
- Closes
- Oct 29, 2026, 17:00 UTC
11 days left - Angik & Helen Kalvak School Renovation Design
cb-386-12916730
- Department
- Government of the Northwest Territories (GNWT)
- Type
- Request for Proposal
- Closes
- Oct 29, 2026, 17:00 UTC
11 days left