Sinn Féin could refer to:
- Sinn Féin (Original) (1905-1923)
- Anti-Treaty Sinn Féin (1923-1970)
- Provisional Sinn Féin (1970-present)
- Workers' Party (Ireland) Originally called Official Sinn Féin, then called Sinn Féin - The Workers Party (1970-present)
- Republican Sinn Féin (1986-present)