B
- (United Counties of Leeds and Grenville) Beales Mills
- (Ottawa) Bearbrook
- (District Municipality of Muskoka) Bear Cave
- (District Municipality of Muskoka) Beatrice
- (Frontenac County) Beatty
- (District Municipality of Muskoka) Beaumaris
- (Grey County) Beaverdale
- (Lambton County) Beaver Meadow
- (Durham) Beaverton
- (Lambton County) Becher
- (Regional Municipality of Niagara) Becketts Bridge
- (Ottawa) Becketts Creek
- (Ottawa) Becketts Landing
- (United Counties of Leeds and Grenville) Bedell
- (Frontenac County) Bedford
- (Frontenac County) Bedford Mills
- (Frontenac County) Beech Corners
- (Hastings County) Beechmount
- (Middlesex County) Beechwood
- (Simcoe County) Beeton
- (Ottawa) Bel Air Heights
- (Ottawa) Bel Air Park
- (Renfrew County) Belangers Corner
- (Huron County) Belfast
- (United Counties of Leeds and Grenville) Bellamys
- (United Counties of Leeds and Grenville) Bellamys Mill
- (Regional Municipality of Niagara) Belleview Beach
- (Lennox and Addington County) Bellheck
- (Hastings County) Bell Rapids
- (Lanark County) Bells Corners