NIK
| Acronym | Definition |
|---|---|
| NIK | Nederlands-Israëlitisch Kerkgenootschap |
| NIK | NF-Kappa-B-Inducing Kinase |
| NIK | Najwyzsza Izba Kontroli (Poland: Highest Controlling House) |
| NIK | Not-In-Kind (CFC technology) |
| NIK | Narcotics Identification Kit |
| NIK | Network Integration Kit (US DoD) |
| NIK | Neumann Informatikai Kar (Hungary) |
| NIK | Normal Input Keying |