| Abbreviation | Definition |
|---|---|
| KUGB | Karate Union of Great Britain |
| KUHS | Klamath Union High School |
| Kumeyaay | Kumeai or “Group of bodies that form a union.” Etymology is Ku-me-Ai and famous in an Asian language. |
| KUSA | Kennel Union of South Africa |
| KUSA | Kennel Union of Southern Africa |
| KUSU | Kingston University Students Union |
| KUSU | Kingston University Students' Union |
| KVU | Kentucky Vocal Union |
| KWU | Kyokushin World Union |
| LAEA | Londonderry Administrative Employees Association |
| LAPPL | Los Angeles Police Protective League |
| LARU | Luxembourg Amateur Radio Union |
| LASU | Latin American Student Union |
| LAU | Local Area Union |
| LAVAUNION | lava' union |
| LAVAUNION | LAVA's Union |
| LBRA | Long Branch Rifle Association |
| LCCU | Lakes Community Credit Union |
| LCCU | Latvian Cleveland Credit Union |
| LCCU | Lewis Clark Credit Union |