NW may stand for:
- Northwest, an ordinal direction
- Nat Wolff, a singer and actor
- New Weekly, an Australian celebrity magazine
- nanowire
- New Wave music
- Nidwalden
- Norfolk and Western Railroad
- North Rhine-Westphalia
- Wii, a video game console (incorrectly called "Nintendo Wii" by some)
- North Western Reporter
- NW postcode area
- Northwest Airlines
- Nuclear warfare
- the code for the ISO specified Vacuum flange fitting
- No Worries
- NetWare, NW is an often used abbreviation in file and protocol names of the Novell NetWare family