W
- (District Municipality of Muskoka) Willow Beach
- (Perth County) Willow Grove
- (Oxford County) Willow Lake
- (Frontenac County) Wilmer
- (Regional Municipality of Waterloo) Wilmot Centre
- (Renfrew County) Wilno
- (Timiskaming District) Wilson
- (Simcoe County) Wilson Point
- (Nipissing District) Wilson's Landing
- (United Counties of Leeds and Grenville) Wilstead
- (Lennox and Addington County) Wilton
- (United Counties of Leeds and Grenville) Wiltsetown
- (District Municipality of Muskoka) Windermere
- (Oxford County) Windfall
- (Ottawa) Windsor Park Village
- (Peterborough County) Windward Sands
- (Wellington County) Winfield
- (Renfrew County) Wingle
- (Regional Municipality of Niagara) Winslow
- (Lambton County) Wisbeach
- (Parry Sound District) Wisemans Corners
- (Grey County) Wodehouse
- (Renfrew County) Woermke
- (Renfrew County) Woito
- (Renfrew County) Wolfe
- (Renfrew County) Wolftown
- (Grey County) Wolseley
- (District Municipality of Muskoka) Wolverine Beach
- (Middlesex County) Woodgreen
- (District Municipality of Muskoka) Woodington