NSD is an open-source server program for the Domain Name System.
NSD may also refer to:
NASA standard detonator Nassi–Shneiderman diagram National School of Drama in India Norrländska Socialdemokraten, a Swedish newspaper Norwegian Social Science Data Services National Security Database, India National Security Department, Hong Kong United States Department of Justice National Security Division National Security Directive of the US George H. W. Bush presidency Neuronal Alpha-Synuclein Disease New Serb Democracy, a Montenegrin political party National Settlement Depository, a Russian Central securities depository Nampa School District Nebraska School for the Deaf Noise spectral density Northshore School District Normandy School District, now Normandy Schools Collaborative