H
- Hamilton
- Halton Hills
- Hilton Beach
- Hidden Valley
- (Durham) Hampton
- (Northumberland County) Hamilton
- (Grey County) Habermehl
- (Oxford County) Hagles Corners
- (Parry Sound District) Haines Lake
- (Parry Sound District) Haldane Hill
- (Renfrew County) Haley Station
- (Renfrew County) Halfway
- (United Counties of Leeds and Grenville) Hallecks
- (Peterborough County) Hall Glen
- (Peterborough County) Hall Landing
- (Haliburton County) Halls Lake
- (Lanark County) Halls Mills
- (Lanark County) Halpenny
- (United Counties of Leeds and Grenville) Halsteads Bay
- (Hastings County) Halston
- (Parry Sound District) Hamer Bay
- (Renfrew County) Hamiltonsfield
- (Simcoe County) Hamlet
- (Grey County) Hampden
- (Renfrew County) Hampelsfield
- (Simcoe County) Hampshire Mills
- (Perth County) Hampstead
- (Timiskaming District) Hanbury
- (Comtés unis de Prescott et Russell) Happy Hollow
- (Simcoe County) Happyland