Unionist may refer to:
- A member or supporter of a trade union
Europe
United Kingdom
- Unionism in the United Kingdom
- Unionism in Ireland
- Unionism in Scotland
- Unionist Party (Scotland)
- Scottish Conservative & Unionist Association
- Conservative Party, known simply as Conservatives
Other places in Europe
- Unification of Moldova and Romania, Romanian-Moldovan Unionists
- Spanish unionism
- Committee of Union and Progress, commonly CUP or Unionists, Turkey (Ottoman Empire)
- Unionism in Belgium
Asia
- Unionist Party (Punjab), India
North America
- Southern Unionist, a resident of the slave states opposed to secession prior to or during the American Civil War
- Unionist politician (American Civil War)
- Unionist Party (Canada), a merger of parties that led Canada during World War I
See also
- Unionist Party (disambiguation)
- Unionism (disambiguation)
- Union (disambiguation)