NS3 or variants may refer to:
Transportation Bukit Gombak MRT station, Singapore, station code NS3 Takiyama Station, Kawanishi, Japan, station code NS03 Kamonomiya Station (Saitama), Japan, station code NS03 NS3, a British NS class airship New Shepard 3, a reusable sub-orbital launch vehicle
Other uses Hepatitis C virus nonstructural protein 3 Novelty seeking level 3, extravagance ns (simulator) version ns-3, computer network simulation software
See also NSSS (disambiguation) NS (disambiguation) 3 (disambiguation)