P
- (Parry Sound District) Port Carmen
- (Parry Sound District) Port Cockburn
- (District Municipality of Muskoka) Port Cunnington
- (Durham) Port Darlington
- (Lanark County) Port Elmsley
- (Huron County) Porter's Hill
- (Algoma) Port Findlay
- (Elgin County) Port Glasgow
- (Durham) Port Granby
- (Grey County) Port Law
- (Algoma) Portlock
- (Simcoe County) Port McNicoll
- (Frontenac County) Port Metcalf
- (District Municipality of Muskoka) Port Sandfield
- (Simcoe County) Port Severn
- (Simcoe County) Port Stanton
- (Elgin County) Port Talbot
- (Durham) Port View Beach
- (York) Pottageville
- (District Municipality of Muskoka) Potters Landing
- (Peterborough County) Preneveau
- (Regional Municipality of Waterloo) Preston
- (Lanark County) Prestonvale
- (Dufferin County) Prices Corner
- (Simcoe County) Prices Corner
- (Grey County) Priceville
- (Simcoe County) Prophet Beach
- (Durham) Prospect
- (Lanark County) Prospect
- (Perth County) Prospect Hill