CNF
- Belo Horizonte International Airport
- Carbon nanofiber
- Carbon-neutral fuel
- Caucasus Nature Fund
- Chomsky normal form
- Cloud-Native Network Function
- Club Nacional de Football
- Comité National Français
- Configuration file
- Conjunctive normal form
- Constant weight without fins
- Cornell NanoScale Science and Technology Facility
- Cyanogen fluoride
- Cytotoxic necrotising factor family
- Royal Australian Navy