| Acronym | Definition |
|---|
| NTK➣Need To Know |
| NTK➣Newton Toolkit |
| NTK➣Nice to Know |
| NTK➣Norsk Tindeklub (Norwegian mountaineering association; est. 1908) |
| NTK➣Noise and Track Keeping (airport system) |
| NTK➣Nitrate Test Kit (aquariums) |
| NTK➣North Texas Karters (kart racing) |
| NTK➣Näringslivets Telekoförening (Swedish) |