word | | Country name |
| conventional | 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 |
| conventional | 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 |
| conventional | 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 |
| conventional | Kosovo | conventional long form: Republic of Kosovo conventional short form: Kosovo local long form: Republika e Kosoves (Republika Kosovo) local short form: Kosova (Kosovo) |
| conventional | Kuwait | conventional long form: State of Kuwait conventional short form: Kuwait local long form: Dawlat al Kuwayt local short form: Al Kuwayt |
| conventional | Kyrgyzstan | conventional long form: Kyrgyz Republic conventional short form: Kyrgyzstan local long form: Kyrgyz Respublikasy local short form: Kyrgyzstan former: Kirghiz Soviet Socialist Republic |
| conventional | Laos | conventional long form: Lao People's Democratic Republic conventional short form: Laos local long form: Sathalanalat Paxathipatai Paxaxon Lao local short form: Pathet Lao (unofficial) |
| conventional | Latvia | conventional long form: Republic of Latvia conventional short form: Latvia local long form: Latvijas Republika local short form: Latvija former: Latvian Soviet Socialist Republic |
| conventional | Lebanon | conventional long form: Lebanese Republic conventional short form: Lebanon local long form: Al Jumhuriyah al Lubnaniyah local short form: Lubnan former: Greater Lebanon |
| conventional | Lesotho | conventional long form: Kingdom of Lesotho conventional short form: Lesotho local long form: Kingdom of Lesotho local short form: Lesotho former: Basutoland |
| conventional | Liberia | conventional long form: Republic of Liberia conventional short form: Liberia |