Words by letter T
- Transition periods
- Transnational parties, see Political parties
- Transparency and openess
- Transparency in the European Central Bank
- Transparency initiative
- Travelling circus
- Treaties of Rome
- Treaty changes
- Treaty of Amsterdam
- Treaty of Maastricht
- Treaty of Nice
- Treaty of Paris
- Treaty of the Elysée
- Treaty of the European Union, see Treaty of Maastricht
- Treaty on European Union (TEU)