Naff or NAFF may refer to:
People:
- William E. Naff, an American scholar of Japanese language
- Lycia Naff, actress
- D-Naff (born 1974), a Namibian award-winning Gospel rapper, and a former street gangster
- Petty Naff, a notorious rowdy of the Know-Nothing Riot of 1856
- Kevin Naff, editor at the Washington Blade
Acronym:
- National Association for Freedom
- Norway American Football Federation
- Nederlandse American Football Federatie (see American football in the Netherlands)
Other:
- An alternate transliteration of the Nat river in Arakan
- A British colloquial form with the meaning 'inferior, tacky', originally from the Polari subculture.