| K | OK |
| KB | Kick Butt |
| KBD | Keyboard |
| KEWL | Cool |
| KFY -or- K4Y | Kiss For You |
| KIA | Killed In Action |
| KIR | Keep It Real |
| KISS | Keep It Simple Stupid |
| KIT | Keep In Touch |
| kitty | it means: vagina |
| KK | Kiss Kiss |
| KMA | Kiss My Ass |
| KMFHA | Kiss My Fat Hairy Ass |
| KMP | Keep Me Posted |
| KMRIA | Kiss My Royal Irish Arse |
| KMSLA | Kiss My Shiny Little Ass |
| KMUF | Kiss Me You Fool |
| KMWA | Kiss My White Ass |
| KOK | Knock |
| KOTC | Kiss On The Cheek |
| KOTL | Kiss On The Lips |
| KPC | Keeping Parents Clueless |
| KUTGW | Keep Up The Good Work |
| KWIM | Know What I Mean |
| KWSTA | Kiss With Serious Tongue Action |
| KYPO | Keep Your Pants On |
K
