- Masjid Kaloutsiani
- Royale Union Saint-Gilloise
- Unionist
- Ulster Unionist Party
- Unionism in Ireland
- Eclaireuses et Eclaireurs Unionistes de France
- Conservative Party (UK)
- Socialist Unionist Party (Syria)
- Council of Protestants in Guiding and Scouting
- Democratic Unionist Party
- Unionist Party
- Liberal Unionist Party
