W
- Westport
- Whitby
- Whitchurch-Stouffville
- (Kenora District) Webequie
- (Essex County) Willowood
- (Renfrew County) Waba
- (Simcoe County) Waddington Beach
- (Parry Sound District) Wade's Landing
- (Frontenac County) Wagarville
- (Wellington County) Wagram
- (District Municipality of Muskoka) Wahawin
- (Parry Sound District) Wahwashkesh
- (Dufferin County) Waldemar
- (Middlesex County) Walkers
- (District Municipality of Muskoka) Walkers Point
- (Nipissing District) Wallace
- (Peterborough County) Wallace Point
- (Wellington County) Wallenstein
- (Parry Sound District) Walls
- (Lambton County) Walnut
- (Elgin County) Waneeta Beach
- (United Counties of Leeds and Grenville) Warburton
- (Grey County) Wareham
- (Simcoe County) Warminster
- (Regional Municipality of Niagara) Warner
- (Peterborough County) Warsaw
- (Perth County) Wartburg
- (Simcoe County) Washago
- (United Counties of Leeds and Grenville) Washburns Corners
- (Oxford County) Washington