O
- (Central Coast Regional District) Ocean Falls
- (Metro Vancouver Regional District) Ocean Park
- (Strathcona Regional District) Octopus Islands
- (Central Coast Regional District) Odlum Island
- (Skeena-Queen Charlotte Regional District) Ogilvie Island
- (Regional District of Central Okanagan) Okanagan Centre
- (Regional District of Central Okanagan) Okanagan Mission
- (Strathcona Regional District) Okis Islands
- (Central Coast Regional District) Oland Islet
- (Regional District of Mount Waddington) Olden Island
- (Northern Rockies Regional Municipality) Old Fort Nelson
- (Skeena-Queen Charlotte Regional District) Old Massett
- Osoyoos
- (Regional District of Okanagan-Similkameen) Oliver
- (Capital Regional District) Oak Bay