| Acronym | Definition |
|---|
| JK➣Just Kidding |
| JK➣Joke |
| JK➣Joking |
| JK➣Jedi Knight (Star Wars) |
| JK➣Jamie Kennedy (comedy TV show) |
| JK➣Junior Kindergarten |
| JK➣Jammu and Kashmir (state in India) |
| JK➣John Kerry |
| JK➣John Krasinski (actor) |
| JK➣Jusuf Kalla (Indonesian politician) |
| JK➣Jamiroquai (band) |
| JK➣Juscelino Kubitschek (Brazilian ex-president) |
| JK➣John Kennedy |
| JK➣Joanne Kathleen (Rowling, Harry Potter author) |
| JK➣Jason Kidd (basketball player) |
| JK➣Jackknife (stretching exercise) |
| JK➣Jyoshi Kousei (female high school student; Japan) |
| JK➣Jin Kazama (Tekken 3 character) |
| JK➣Jack Kilby (TI engineer; inventor of the integrated circuit) |
| JK➣Järnkaminerna (Djurgårdens IF supporters) |
| JK➣Järnkaminerna (Swedish sports fans) |
| JK➣Juuni Kokki (Anime) |
| JK➣Kidd blood group system |
| JK➣Jälkikirjoitus (Finnish: Post Scriptum) |
| JK➣Jääkärikomppania |
| JK➣Jiddu Krishnamurthy (philosper) |
| JK➣Jedrilièarski Klub (Croatian: Yacht Club) |
| JK➣Jumping Kangaroo |
| JK➣Julianischer Kalender (Julian Calendar) |
| JK➣type of flip flop named for Jack Kilby |