NIAS
- Ignace Tonené
- National Institute of Advanced Studies
- Nederlandsch-Indische Artsen School
- Netherlands Institute for Advanced Study
- Nias Island
- Nias Regency
- Nias language
- Nias people
- Nias-class gunboat
- Nickel arsenide
- Nordic Centre in Shanghai
- Nordic Institute of Asian Studies
- Northern Ireland Ambulance Service