word | | Country name |
| local | Mexico | conventional long form: United Mexican States conventional short form: Mexico local long form: Estados Unidos Mexicanos local short form: Mexico |
| local | Micronesia, Federated States of | conventional long form: Federated States of Micronesia conventional short form: none local long form: Federated States of Micronesia local short form: none former: Trust Territory of the Pacific Islands, Ponape, Truk, and ... |
| local | Moldova | conventional long form: Republic of Moldova conventional short form: Moldova local long form: Republica Moldova local short form: Moldova former: Moldavian Soviet Socialist Republic, Moldovan Soviet Socialist Republic |
| local | Monaco | conventional long form: Principality of Monaco conventional short form: Monaco local long form: Principaute de Monaco local short form: Monaco |
| local | Mongolia | conventional long form: none conventional short form: Mongolia local long form: none local short form: Mongol Uls former: Outer Mongolia |
| local | Montenegro | conventional long form: none conventional short form: Montenegro local long form: none local short form: Crna Gora former: People's Republic of Montenegro, Socialist Republic of Montenegro, Republic of Montenegro |
| local | Morocco | conventional long form: Kingdom of Morocco conventional short form: Morocco local long form: Al Mamlakah al Maghribiyah local short form: Al Maghrib |
| local | Mozambique | conventional long form: Republic of Mozambique conventional short form: Mozambique local long form: Republica de Mocambique local short form: Mocambique former: Portuguese East Africa |
| local | Namibia | conventional long form: Republic of Namibia conventional short form: Namibia local long form: Republic of Namibia local short form: Namibia former: German Southwest Africa, South-West Africa |
| local | Nauru | conventional long form: Republic of Nauru conventional short form: Nauru local long form: Republic of Nauru local short form: Nauru former: Pleasant Island |
| local | Nepal | conventional long and short form: Nepal local long and short form: Nepal |
| local | Netherlands | conventional long form: Kingdom of the Netherlands conventional short form: Netherlands local long form: Koninkrijk der Nederlanden local short form: Nederland |
| local | Netherlands Antilles | conventional long form: none conventional short form: Netherlands Antilles local long form: none local short form: Nederlandse Antillen former: Curacao and Dependencies |
| local | New Caledonia | conventional long form: Territory of New Caledonia and Dependencies conventional short form: New Caledonia local long form: Territoire des Nouvelle-Caledonie et Dependances local short form: Nouvelle-Caledonie |
| local | Nicaragua | conventional long form: Republic of Nicaragua conventional short form: Nicaragua local long form: Republica de Nicaragua local short form: Nicaragua |
| local | Niger | conventional long form: Republic of Niger conventional short form: Niger local long form: Republique du Niger local short form: Niger |
| local | Norway | conventional long form: Kingdom of Norway conventional short form: Norway local long form: Kongeriket Norge local short form: Norge |
| local | Oman | conventional long form: Sultanate of Oman conventional short form: Oman local long form: Saltanat Uman local short form: Uman former: Muscat and Oman |
| local | 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 |
| local | 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 |
| local | Panama | conventional long form: Republic of Panama conventional short form: Panama local long form: Republica de Panama local short form: Panama |
| local | 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 |