NUP is an abbreviation for: National Umma Party Sudan. a political party in Sudan National Union Party (disambiguation), a number political parties in various states National Unity (Israel), a centre-right political alliance since 2022 National Unity Party (Philippines) National Unity Platform, main opposition party in Uganda Neapolis University, Pafos, a university in Cyprus Necrotizing ulcerative periodontitis, a subclassification of Necrotizing periodontal diseases New Union Party, a political party in the United States New Unity Partnership, a trade union in the United States Northwestern University Press Nottingham University Press Nuclear Pore ('unique social security number'), the identification number for social security in El Salvador It is also the ISO 639-3 code for the Nupe language.