NFA
- 2NFA
- AFN (disambiguation)
- ANF (disambiguation)
- Angling Trust
- FK NFA
- FNA (disambiguation)
- Fan (disambiguation)
- Irish Farmers' Association
- List of airline codes (N)
- N'fa
- NAF (disambiguation)
- NFA-Cup
- NFAS (disambiguation)
- NFFA (disambiguation)
- Namibia Football Association
- National Fibromyalgia Association
- National Fire Academy
- National Fire Agency
- National Firearms Act
- National Firearms Agreement
- National Firearms Association
- National Flute Association
- National Food Authority (Philippines)
- National Football Academy of Lithuania
- National Forensic Association
- National Forestry Authority
- National Futures Association
- Native Forest Action
- Net foreign assets
- New Farmers of America
- New Fighter Aircraft Project
- Newburgh Free Academy
- Nigeria Football Association
- No Fixed Address (band)
- No fixed abode
- Non-fullerene acceptor
- Nondeterministic finite automaton
- Norwich Free Academy
- Nykøbing FC