NKK
| 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) |