- O'Brien Street
- O'Leary Crescent
- Oak Terrace
- Oakhill Crescent
- Oakland Street
- Ocean Court
- Ocean Drive
- Ocean View Lane
- Ocean West Way
- Old Anthonys Cove Road
- Old Black River Road
- Old Bridge Road
- Old Drury Cove Road
- Old Lake Trail
- Old Orchard Lane
- Old Red Head Road
- Old Wells Road
- Old Westmorland Road
- Olga's Place
- Olive Street
- Olsen Road
- Omega Drive
- Ontario Street
- Orange Street
- Orange Street West
- Orchid Street
- Osborne Avenue
- Osprey Terrace
- Owens Road
- Oxford Place