NSV or nSv may refer to:
Nationalist organisations National Socialist Vanguard, a US neo-Nazi group Nationalistische Studentenvereniging, the Flemish Nationalist Student Association Nationalsozialistische Volkswohlfahrt, the Nazi People's Welfare Organization National-Social Association, a political party of the former German empire, initials NSV
Science and technology Nullsoft Streaming Video format New Catalogue of Suspected Variable Stars Nanosievert, a unit of radiation Newton–Størmer–Verlet method in mathematics No scalpel vasectomy
Other Nürnberger-Spielkarten-Verlag, German game and playing card manufacturer NSV machine gun, Soviet, 12.7 mm Neighbourhoods for a Sustainable Vancouver, British Columbia, Canada