| Abbreviation | Definition |
|---|---|
| MKAI | Midwest Karate Association |
| MKK | Melbourne Kyokushin Karate |
| MKKA | Mongolian Kyokushinkai Karate Association |
| MOKA | Mas Oyama Karate Academy |
| MVKC | Mountain View Karate Center |
| NAKA | National Amateur Karate Association |
| NBKA | Nayak Budokan Karate Academy |
| NEKA | New England Karate Academy |
| NIKB | Northern Ireland Karate Board |
| NKD | Nihon Karate Dojo |
| NKF | National Karate-do Federation |
| NKG | Naked Karate Girls |
| NKI | National Karate Institute |
| NKL | National Karate League |
| NKN | NeoKarate Network |
| NKS | Northern Karate Schools |
| NMC | NUKF (National Union of Karate-Do Federation) Media Cell |
| NUKF | National Union of Karate-Do Federation |
| OKF | Oceania Karate Federation |
| OMKA | Ozark Mountain Karate Association |