D
- (Middlesex County) Delaware West
- (United Counties of Leeds and Grenville) Daytown
- (Algoma) Dayton
- (Algoma) Day Mills
- (Lambton County) Dawn Valley
- (Renfrew County) Davis Mills
- (United Counties of Leeds and Grenville) Davis Lock
- (Frontenac County) Davidsons Beach
- (United Counties of Leeds and Grenville) Darlingside
- (Wellington County) Damascus
- (Simcoe County) Dalston
- (Ottawa) Dalmeny
- (Middlesex County) Derwent
- (Timiskaming District) Dobie
- (Ottawa) Dirleton
- (Parry Sound District) Dillon
- (Oxford County) Dicksons Corners
- (Elgin County) Dexter
- (Lanark County) DeWitts Corners
- (Renfrew County) Dacre
- (Renfrew County) Dewars
- (Middlesex County) Devizes
- (Lennox and Addington County) Desmond
- (Frontenac County) Desert Lake
- (Wellington County) Derrynane
- (Rainy River District) Dermid
- (Oxford County) Dereham Centre
- (Parry Sound District) Depot Harbour
- (Middlesex County) Denfield
- (Lennox and Addington County) Denbigh