| Acronym | Definition |
|---|
| NKK➣Nippon Kaiji Kyokai |
| NKK➣Nippon Kodoshi Kogyo (Japan) |
| NKK➣Nihon Kaiheiki Kogyo (various locations) |
| NKK➣Norwegian Kennel Klub |
| NKK➣Nevada Kyudo Kai (Japanese archery) |
| NKK➣Nordisk Kemiteknolog Konferens (conference for engineering students from Norway, Denmark, Sweden and Finland) |
| NKK➣Navta Kriejtiv Kru (Serbian: Oil Creative Crew; rock band) |
| NKK➣Nationale Kunst Koop (Dutch: National Art Sale; Netherlands) |
| NKK➣Narodnyi Kongress Kazakhstana (Russian: People's Congress of Kazakhstan) |