| Country | Country name |
| Oman | conventional long form: Sultanate of Oman conventional short form: Oman local long form: Saltanat Uman local short form: Uman former: Muscat and Oman |
| Pacific Ocean | void |
| Pakistan | conventional long form: Islamic Republic of Pakistan conventional short form: Pakistan local long form: Jamhuryat Islami Pakistan local short form: Pakistan former: West Pakistan |
| Palau | conventional long form: Republic of Palau conventional short form: Palau local long form: Beluu er a Belau local short form: Belau former: Trust Territory of the Pacific Islands, Palau District |
| Panama | conventional long form: Republic of Panama conventional short form: Panama local long form: Republica de Panama local short form: Panama |
| Papua New Guinea | conventional long form: Independent State of Papua New Guinea conventional short form: Papua New Guinea local short form: Papuaniugini former: Territory of Papua and New Guinea abbreviation: PNG |
| Paracel Islands | conventional long form: none conventional short form: Paracel Islands |
| Paraguay | conventional long form: Republic of Paraguay conventional short form: Paraguay local long form: Republica del Paraguay local short form: Paraguay |
| Peru | conventional long form: Republic of Peru conventional short form: Peru local long form: Republica del Peru local short form: Peru |
| Philippines | conventional long form: Republic of the Philippines conventional short form: Philippines local long form: Republika ng Pilipinas local short form: Pilipinas |
| Pitcairn Islands | conventional long form: Pitcairn, Henderson, Ducie, and Oeno Islands conventional short form: Pitcairn Islands |
| Poland | conventional long form: Republic of Poland conventional short form: Poland local long form: Rzeczpospolita Polska local short form: Polska |
| Portugal | conventional long form: Portuguese Republic conventional short form: Portugal local long form: Republica Portuguesa local short form: Portugal |