NSDP may refer to:

Irish Nazi Party (NSDP-AO), see Adolf Mahr National Secular Democratic Party, a political party in Lebanon National Solidarity and Development Party, a political organization in Burma National Space Development Program (Philippines) Net state domestic product, used in relation to calculate the GDP per capita in India Netgear Switch Discovery Protocol, a vendor-specific management protocol Nevada State Democratic Party, an affiliate of the Nevada Democratic Party New Social Democratic Party, in the Republic of North Macedonia Nationwide Social Democratic Party, in the Republic of Kazakhstan

See also NSDAP, or Nazi Party