Nica
- Biblidinae
- Courts of Northern Ireland
- Ice sculpture
- National Institute of Circus Arts
- National Intelligence Coordinating Agency
- Netherlands Indies Civil Administration
- Nica (name)
- Nicaragua
- Nicaraguan people
- Nicaragüense de Aviación
- Nice
- Nicotine Anonymous
- Nuclotron-based Ion Collider Facility
- Nīca
- Sonny Clark