NCF
- Cyanogen fluoride
- National Capital FreeNet
- National Championship Foundation
- National Christian Foundation
- National Civic Federation
- National Commerce Financial Corporation
- National Cultural Foundation
- National Cyber Force
- National Cybersecurity FFRDC
- Nederlandsche Cocaïnefabriek
- New Century Foundation
- Nicaraguan Cycling Federation
- Nigeria Cricket Federation
- No-Conscription Fellowship
- Nomenclature Committee for Fungi