- Jan 20 Barack Obama, inaugurated as the 44th President of the United States of America, becomes the United States' first African-American president
- Mar 4 International Criminal Court issues an arrest warrant for Sudanese President Omar Hassan al-Bashir for war crimes and crimes against humanity in Darfur becoming the first sitting head of state to be indicted
- Apr 30 Chrysler automobile company files for Chapter 11 bankruptcy
- May 18 Sri Lankan Civil War: The LTTE are defeated by the Sri Lankan government, ending almost 26 years of fighting between the two sides.
- Aug 7 “Tik Tok” single released by Kesha (Billboard Song of the Year 2010)
Jóhanna Sigurðardóttir is elected as the first female Prime Minister of Iceland, becoming the first openly gay Head of Government in the modern world.
On February 1, 2009