Pomerania (a former duchy, historical province of Prussia, and now a geographic region of Central Europe split between Germany and Poland on the southern shore of the Baltic Sea)
Puducherry (a union territory in southern India, consisting of four geographically separated exclaves of former French India, namely its capital, Karaikal, Yanam, and Mahe); Puducherry, Pondicherry (the capital city of the union territory of Puducherry, India)
Pontus (an ancient kingdom and cultural region covering the eastern half of the southern coast of the Black Sea, in Anatolia in modern Turkey; traditionally Greek-speaking); Pontus (a former province of the Roman Empire covering the western half of the Pontus region unified with Bithynia; in full, Bithynia et Pontus)
a regional county municipality of Outaouais, Quebec, Canada; a municipality of Les Collines-de-l'Outaouais Regional County Municipality, Outaouais, Quebec, Canada
Popasna (a city, the administrative centre of Popasna urban hromada, Siverskodonetsk Raion, Luhansk Oblast, Ukraine, founded as a railway station in 1878, occupied by Russian forces since May 2022, heavily damaged during the war in Donbas and then razed to the ground during the Battle of Popasna)
Pordenone (a province of the Friuli-Venezia Giulia autonomous region, Italy); Pordenone (the capital city of the province of Pordenone, Friuli-Venezia Giulia autonomous region, Italy)