NS4 may refer to:
Non-structural protein 4 NS4 (HCV) - two viral proteins found in hepatitis C virus: NS4A NS4B Dengue virus NS4a and NS4b West Nile virus NS4A and NS4B
Transportation New Shepard 4, a Blue Origin reusable space launch vehicle booster rocket (booster #4) Blue Origin NS-4, a 2016 April 2 Blue Origin suborbital spaceflight mission for the New Shepard RAF N.S. 4, a British NS class airship Choa Chu Kang MRT/LRT station (station code: NS4) abbreviated as (NS4/BP1); Singapore Uguisunomori Station (station code: NS04), Kawanishi, Hyōgo Prefecture, Japan Higashi-Miyahara Station (station code: NS04), Kita-ku, Saitama, Japan Toyota NS4 - a plug-in hybrid concept car unveiled at the January 2012 North American International Auto Show.
Other Bedford (provincial electoral district), constituency N.S. 04; Nova Scotia, Canada Novelty seeking level 4, disorderliness NS-4; a fictional robot from the 2004 film, "I, Robot" Netscape Communicator - also known as Netscape 4, or NS4
See also
NS (disambiguation) 4 (disambiguation)