| Abbreviation | Definition |
|---|---|
| JYC | Juneau Yacht Club |
| K | Karate |
| K | Kick |
| K | Kicker |
| K | Kicks |
| K | Strikeout (Baseball) |
| KA | Kick Ass |
| KA | Knife Arena |
| KAAA | Kenya Amateur Athletic Association |
| KAAC | Korean American Alpine Club |
| KAAF | Kalamazoo Amateur Athletic Federation |
| KAFS | Kentucky Association of Fairs and Horse Shows |
| KAP | Knowledge, Attitude, Practice |
| KB | Kicking Butt |
| KBA | Kingston Boardsailing Association |
| KBA | Kobe Bryant Academy |
| KBM | Kyle Busch Motorsports |
| KBR | Kick Back Racing |
| KBS | Kuntao Blades And Stick |
| KBS | Kuntao Blades And Sticks |