- 1 January: Austria takes the Presidency.
- 2 February:
- 16 February: The Commission's 'Bolkestein Directive' is approved at its first reading by the MEPs admit large protests outside the Parliament.
- 7 April: .eu domain opens to the public.
- 4 May: The Commission adopts a green paper on the European Transparency Initiative.
- 3 June: Montenegro declares independence, leads to separate relations and accession negotiations.
- 21 June: Barroso attends EU-US summit in Vienna.
- 1 July: Finland takes the Presidency.
- 12 July: Kroes gives Microsoft a 280.5 million euro fine for its anti-competitive behaviour.
- 24 July: The Council adopts a common position on the Bolkestein Directive
- 15 November: European Parliament adopts the Bolkestein Directive at its second reading.
- 12 December: Parliament approves the Bulgarian and Romanian Commissioners despite concerns over the weakness of the Multilingualism portfolio.