NSG

NSG may stand for:

Businesses

 * Nippon Sheet Glass, a Japanese glass manufacturer
 * NetWare Systems Group, Novell's defunct operating system division

Government and military

 * National Security Guard, a federal counterterrorism force in India
 * National Street Gazetteer, a database of all streets in England and Wales
 * Naturschutzgebiet, a nature protection category in Germany
 * Nebraska State Guard, active during World War II and the Vietnam War
 * Nordic Support Group, a multinational peacekeeping force
 * Nuclear Suppliers Group, an international export regulation body

Places

 * Northampton School for Girls, a high school in Northampton, England
 * New Southgate railway station, London (by station code)

Other uses

 * NSG (group), a British music collective
 * NSG mouse, an immunodeficient laboratory mouse strain
 * North Sea Gas, natural gas from Europe's North Sea oil field