W
- (Nipissing District) Wasing
- (Cochrane District) Watabeag
- (United Counties of Leeds and Grenville) Waterton
- (Ottawa) Watterson Corners
- (Parry Sound District) Waubamik
- (Simcoe County) Waubaushene
- (Lambton County) Waubuno
- (Grey County) Waudby
- (Cochrane District) Wavell
- (Simcoe County) Waverley
- (Timiskaming District) Wawbewawa
- (Kenora District) Weagamow Lake
- (Sudbury) Webbwood
- (Simcoe County) Websterville
- (Lambton County) Weidmann
- (Regional Municipality of Waterloo) Weissenburg
- (Grey County) Welbeck
- (Middlesex County) Wellburn
- (Hastings County) Wellman
- (Lanark County) Wemyss
- (Simcoe County) Wendake Beach
- (Lennox and Addington County) Weslemkoon
- (Dufferin County) Wesley
- (Lennox and Addington County) Wesley
- (Lambton County) West Becher
- (Ottawa) Westboro
- (Ottawa) Westcliffe Estates
- (Simcoe County) West Essa
- (Huron County) Westfield
- (Bruce County) Westford