F
- (Oxford County) Forest Estates
- (Simcoe County) Forest Harbour
- (Simcoe County) Forest Home
- (Renfrew County) Forest Lea
- (United Counties of Leeds and Grenville) Forfar
- (Comtés unis de Prescott et Russell) Forget
- (Regional Municipality of Niagara) Forks Road
- (Haliburton County) Fortescue
- (United Counties of Leeds and Grenville) Forthton
- (Ottawa) Foster Farm
- (Simcoe County) Fountain Beach
- (Renfrew County) Fourth Chute
- (Parry Sound District) Four Winds Island
- (Peterborough County) Fowlers Corners
- (Hastings County) Fox Corners
- (Simcoe County) Foxmead
- (District Municipality of Muskoka) Fox Point
- (Renfrew County) Foymount
- (Durham) Fralick's Beach
- (District Municipality of Muskoka) Franceville
- (Peterborough County) Fraserville
- (Dufferin County) Fraxa Junction
- (United Counties of Leeds and Grenville) Frayn's Landing
- (United Counties of Leeds and Grenville) Freeland
- (Peterborough County) Freeman Corners
- (Renfrew County) Fremo Corners
- (Ottawa) French Hill
- (Lanark County) French Line
- (Renfrew County) French Settlement
- (Middlesex County) Friendly Corners