2004 in the European Union

Events from the year 2004 in the European Union.

← 2003 2002 2001 2004 in the European Union → 2005 2006 2007
Decades:	1980s 1990s 2000s 2010s 2020s
See also:	Other events of 2004 Timeline of EU history

Incumbents

• Commission President
  • Romano Prodi (to 22 November)
  • José Manuel Barroso (since 22 November)
• Council Presidency
  • Ireland (January–June)
  • The Netherlands (July–December)
• Parliament President
  • Pat Cox (to 30 July)
  • Josep Borrell (since 30 July)
• High Representative
  • Javier Solana

Events

The hall in the Capitoline Museums of Rome, Italy, where the European Constitution was signed.

• 1 May: 2004 Enlargement (Cyprus, Czech Republic, Estonia, Hungary, Latvia, Lithuania, Malta, Poland, Slovakia and Slovenia).
• 10–13 June: 2004 European Parliament election expanding the Commission.
• 22 July: The European Parliament approves José Manuel Barroso as President.^[1]
• 29 October: Delegates of the 25 member states sign the European Constitution in Rome.^[2][3][4]
• 1 November: Original date for Barroso to enter office delayed due to parliamentary opposition to some of his Commissioners. A new college is later submitted.
• 18 November: The European Parliament approves the Barroso Commission.
• 22 November: Barroso Commission took office.