2009 in Croatia

• President – Stjepan Mesić
• Prime Minister – Ivo Sanader (until 6 July), Jadranka Kosor (starting 6 July)
• Speaker – Luka Bebić

Ongoing – Accession of Croatia to the European Union

• April 1 – Croatia became a full member of NATO.
• July 1 – Ivo Sanader resigns as the Prime Minister of Croatia and President of Croatian Democratic Union.
• July 3 – First Swine Flu case was confirmed by a female from Australia
• July 6 – Jadranka Kosor of the Croatian Democratic Union becomes Prime Minister.
• July 24 – Six people are killed and 55 are injured in the Rudine train derailment.
• December 27 – The first round of presidential elections are held.

• Igor Cukrov won Dora 2009 on February 28 to become Croatia's representative at the Eurovision Song Contest 2009.

• Marin Čilić won the 2009 Chennai Open on January 10.
• 2009 World Men's Handball Championship held in Croatian cities from January 16–February 1.
• K-1 Croatia 2009 held in Split on March 21.
• Blanka Vlašić successfully defended her high jump world title on August 20.
• The 2009 Golden Spin figure skating competition is held in Zagreb December 10–12.