| Acronym | Meaning |
| KERA | Kentucky Education Reform Act (of 1990) |
| KERMA | Kinetic Energy Released In MAterial / In MAtter / Per Unit MAss |
| KES | Kenyan Shilling (ISO 4217 Currency Code) |
| KET | Kentucky Educational Television Refers To The Network And The Production Facilities -Key English Test |
| KF | Kilofarad |
| KFC | Kentucky Fried Chicken |
| KFOR | UN Kosovo Force |
| KFUPM | King Fahd University Of Petroleum & Minerals |
| KG | Kilogram - Kongo Language (ISO 639-1 Code) |
| KG | Kyrgyzstan (FIPS 10-4 Country Code; ISO 3166 Digram) |
| KGB | Komitet Gosudarstvennoy Bezopasnosti (Russian Committee For State Security) (1954-1991) |
| KGO | Knight Of The Guelplic Order Of Hanover |
| KGS | Kyrgyz Som (ISO 4217 Currency Code) |
| KGZ | Kyrgyzstan (ISO 3166 Trigram) |
| KH | Cambodia (ISO 3166 Digram) |
| KH | Kilohenry |
| KHM | Cambodia (ISO 3166 Trigram) |
| KHM | Khmer Language (ISO 639-2 Code) |
| KHR | Cambodian Riel (ISO 4217 Currency Code) |
| KI | Gikuyu Language (ISO 639-1 Code) |
| KI | Kibi |
| KI | Kiribati (ISO 3166 Digram) |
| KIA | Killed In Action |
| KIDS | Knowledge-based Integrated Design System |
| KIK | Gikuyu Language (ISO 639-2 Code) |
| KIN | Kinyarwanda Language (ISO 639-2 Code) |
| KIR | Kiribati (ISO 3166 Trigram) |
| KIR | Kyrgyz Language (ISO 639-2 Code) |
| KISS | Keep It Simple |
| KITECH | Korean Institute Of Industrial Technology |
| KITT | Knight Industries Two Thousand |
| KJ | Kilojoule |
| KJ | Kuanyama Language (ISO 639-1 Code) |
| KK | Kabushiki Kaisha (Japanese For Stock Company |
| KK | Kazakh Language (ISO 639-1 Code) |
| KK | Kilokelvin |
| KKK | Ku Klux Klan |
| KL | Kalaallisut Language (ISO 639-1 Code) |
| KL | Kilolitre |
| KLENOT | KLE? Observatory Near Earth And Other Unusual Objects Observations Team And Telescope |
| KLM | Koninklijke Luchtvaart Maatschappij (Dutch Royal Dutch Airlines) |
| KLOC | Kilo Lines Of Code |
| KM | Comoros -Knowledge Management |
| KM | Khmer Language (ISO 639-1 Code) - Kilometre |
| KMF | Comoro Franc (ISO 4217 Currency Code) |
| KMFDM | Kein Mitleid Fr Die Mehrheit (German No Pity For The Majority Music Band) |
| KMR | Kwajalein Missile Range |
| KN | Democratic People's Republic Of Korea (FIPS 10-4 Country Code) - Saint Kitts And Nevis (ISO 3166 Digram) |
| KN | Kannada Language (ISO 639-1 Code) |
| KN | Kilonewton |