word | | Country name |
| short | Hungary | conventional long form: Republic of Hungary conventional short form: Hungary local long form: Magyar Koztarsasag local short form: Magyarorszag |
| short | Iceland | conventional long form: Republic of Iceland conventional short form: Iceland local long form: Lydveldid Island local short form: Island |
| short | India | conventional long form: Republic of India conventional short form: India local long form: Republic of India/Bharatiya Ganarajya local short form: India/Bharat |
| short | Indonesia | conventional long form: Republic of Indonesia conventional short form: Indonesia local long form: Republik Indonesia local short form: Indonesia former: Netherlands East Indies, Dutch East Indies |
| short | Iran | conventional long form: Islamic Republic of Iran conventional short form: Iran local long form: Jomhuri-ye Eslami-ye Iran local short form: Iran former: Persia |
| short | Iraq | conventional long form: Republic of Iraq conventional short form: Iraq local long form: Al Jumhuriyah al-Iraqiyah local short form: Al Iraq |
| short | Ireland | conventional long form: none conventional short form: Ireland local long form: none local short form: Eire |
| short | Isle of Man | conventional long form: none conventional short form: Isle of Man abbreviation: I.O.M. |
| short | Israel | conventional long form: State of Israel conventional short form: Israel local long form: Medinat Yisra'el local short form: Yisra'el |
| short | Italy | conventional long form: Italian Republic conventional short form: Italy local long form: Repubblica Italiana local short form: Italia former: Kingdom of Italy |
| short | Jamaica | conventional long form: none conventional short form: Jamaica |
| short | Jan Mayen | conventional long form: none conventional short form: Jan Mayen |
| short | Japan | conventional long form: none conventional short form: Japan local long form: Nihon-koku/Nippon-koku local short form: Nihon/Nippon |
| short | Jersey | conventional long form: Bailiwick of Jersey conventional short form: Jersey |
| short | Jordan | conventional long form: Hashemite Kingdom of Jordan conventional short form: Jordan local long form: Al Mamlakah al Urduniyah al Hashimiyah local short form: Al Urdun former: Transjordan |
| short | Kazakhstan | conventional long form: Republic of Kazakhstan conventional short form: Kazakhstan local long form: Qazaqstan Respublikasy local short form: Qazaqstan former: Kazakh Soviet Socialist Republic |
| short | Kenya | conventional long form: Republic of Kenya conventional short form: Kenya local long form: Republic of Kenya/Jamhuri ya Kenya local short form: Kenya former: British East Africa |
| short | Kiribati | conventional long form: Republic of Kiribati conventional short form: Kiribati local long form: Republic of Kiribati local short form: Kiribati note: pronounced keer-ree-bahss former: Gilbert Islands |
| short | Korea, North | conventional long form: Democratic People's Republic of Korea conventional short form: North Korea local long form: Choson-minjujuui-inmin-konghwaguk local short form: Choson abbreviation: DPRK |
| short | Korea, South | conventional long form: Republic of Korea conventional short form: South Korea local long form: Taehan-min'guk local short form: Han'guk abbreviation: ROK |
| short | Kosovo | conventional long form: Republic of Kosovo conventional short form: Kosovo local long form: Republika e Kosoves (Republika Kosova) local short form: Kosova (Kosovo) former: Kosovo and Metohija Autonomous Province |
| short | Kuwait | conventional long form: State of Kuwait conventional short form: Kuwait local long form: Dawlat al Kuwayt local short form: Al Kuwayt |
| short | Kyrgyzstan | conventional long form: Kyrgyz Republic conventional short form: Kyrgyzstan local long form: Kyrgyz Respublikasy local short form: Kyrgyzstan former: Kirghiz Soviet Socialist Republic |