| Country | Independence |
| Pacific Ocean | void |
| Pakistan | 14 August 1947 (from British India) |
| Palau | 1 October 1994 (from the US-administered UN Trusteeship) |
| Panama | 3 November 1903 (from Colombia; became independent from Spain on 28 November 1821) |
| Papua New Guinea | 16 September 1975 (from the Australian-administered UN trusteeship) |
| Paracel Islands | void |
| Paraguay | 14 May 1811 (from Spain) |
| Peru | 28 July 1821 (from Spain) |
| Philippines | 12 June 1898 (independence proclaimed from Spain); 4 July 1946 (from the US) |
| Pitcairn Islands | none (overseas territory of the UK) |
| Poland | 11 November 1918 (republic proclaimed); notable earlier dates: A.D. 966 (adoption of Christianity, traditional founding date), 1 July 1569 (Polish-Lithuanian Commonwealth created) |
| Portugal | 1143 (Kingdom of Portugal recognized); 5 October 1910 (republic proclaimed) |
| Puerto Rico | none (territory of the US with commonwealth status) |
| Qatar | 3 September 1971 (from the UK) |
| Romania | 9 May 1877 (independence proclaimed from the Ottoman Empire; independence recognized on 13 July 1878 by the Treaty of Berlin); 26 March 1881 (kingdom proclaimed); 30 December 1947 (republic proclaimed) |
| Russia | 24 August 1991 (from the Soviet Union); notable earlier dates: 1157 (Principality of Vladimir-Suzdal created); 16 January 1547 (Tsardom of Muscovy established); 22 October 1721 (Russian Empire proclaimed); 30 December 1922 (Soviet Union established) |
| Rwanda | 1 July 1962 (from Belgium-administered UN trusteeship) |
| Saint Barthelemy | none (overseas collectivity of France) |