| Abbreviation | Definition |
|---|---|
| KMSHA | Kentucky Mountain Saddle Horse Association |
| KNOT | Kollectors Of Nasty Old Ties |
| KO | Knight Online |
| KODT | Knights Of the Dinner Table |
| KOS | King Of Sorrow |
| KOS | King Of Swords |
| KR | Kit Review |
| KRCC | Keystone Radio Control Club |
| KROC | The Keg Ran Out Club |
| KTC | Kings Taking Control |
| KTM | Kentucky Trail Monkey |
| L2B | London to Brighton |
| LAC | London Anime Club |
| LAG | League of Advanced Gamers |
| LAOC | Los Angeles Orienteering Club |
| LAS | Leap August Society |
| LAS | Llama Appreciation Society |
| LBD | Loving Beautiful Dog |
| LBJ | Little Big John |
| LBO | Look Before Opening |