NWC
- NEXTEL Cup
- National War College
- National Weather Center
- National Whistleblower Center
- National Working Committee
- National Wrestling Conference
- Naval War College
- Netball World Championships
- Network-centric warfare
- New World Computing
- Nintendo Wi-Fi Connection
- Nintendo World Championships
- Norbert Wiener Center for Harmonic Analysis and Applications
- North West Company
- Northwest College
- Northwest Conference
- Northwestern College (Iowa)
- Northwestern College (Minnesota)
- Northwestern College (Wisconsin)
- NoteWorthy Composer