P
- Paget
- Pagwa River
- Paincourt
- Painswick
- Paisley
- Pakenham
- Pakesley
- Palermo
- Palgrave
- Palm Beach
- Palmer Rapids
- Palmerston
- Paradise Lake
- Parham
- Paris
- Parkdale
- Parkersville
- Parkhill
- Park Head
- Parry Sound
- Pass Lake
- Paudash
- Payne
- Peabody
- Pearceley
- Pearl
- Pearl Lake
- Peawanuck
- Pefferlaw
- Pelham
- Pembroke
- Pendleton
- Penetanguishene
- Pentland Corners
- Perivale
- Perkinsfield
- Perm
- Perrins Corners
- Perth
- Perth Road Village
- Petawawa
- Pethericks Corners
- Peterborough
- Petrolia
- Pevensey
- Phelpston
- Piccadilly
- Pickerel Lake
- Pickering
- Pickle Crow
- Pickle Lake
- Picton
- Pikwakanagan First Nation
- Pinedale
- Pine Grove
- Pine Valley
- Pinewood
- Plainville
- Plantagenet
- Pleasant Corners
- Pleasant Valley, Manitoulin District, Ontario; Pleasant Valley, Stormont, Dundas and Glengarry Counties, Ontario; Pleasant Valley, Essex County, Ontario; Pleasant Valley, Hamilton, Ontario; Pleasant Valley, Renfrew County, Ontario
- Pleasant View
- Plevna
- Plummer Additional
- Point Abino
- Point Edward
- Pointe Fortune
- Pointe au Baril
- Poland
- Pomona
- Ponsonby
- Pontypool
- Pooles Resort
- Poplar
- Poplar Dale
- Porcupine
- Port Albert
- Port Anson
- Port Bolster
- Port Britain
- Port Bruce
- Port Burwell
- Port Carling
- Port Carmen
- Port Colborne
- Port Credit
- Port Cunnington
- Port Davidson
- Port Dover
- Port Elgin
- Port Elmsley
- Porter's Hill
- Port Hope
- Port Granby
- Port Law
- Port McNicoll
- Port Perry
- Port Rowan
- Port Ryerse
- Port Severn
- Port Stanley
- Port Sydney
- Portland
- Pottageville
- Potters Landing
- Powassan
- Powells Corners
- Precious Corners
- Preneveau
- Prescott
- Preston
- Prestonvale
- Priceville
- Primrose
- Princeton
- Prospect
- Proton Station
- Providence Bay
- Punkeydoodles Corners
- Purdy
- Purple Hill
- Purple Valley
- Purpleville
- Pusey
Read more about this topic: List Of Communities In Ontario