DUP or Dup may refer to:
Politics Democratic Unionist Party, a conservative and unionist party in Northern Ireland Democratic Unionist Party (disambiguation) Democratic Union Party (disambiguation) Democratic United Party (South Korea), a former name of the Democratic Party (South Korea, 2015)
Computing dup (system call) DUP programming language
Other uses Dup (drum), a Caribbean membranophone Dup (cuneiform), a sign in cuneiform writing Dances of Universal Peace, a spiritual practice Daughters of Utah Pioneers, a women's organization Duano' language (ISO-639: dup)
See also Dupe (disambiguation) Duplication (disambiguation)