- The first iPhone was released in January.
- In February, the United States began the process of withdrawing troops form Iraq, ending the Iraq War.
- The United kingdom celebrated the 50th anniversary of independence form India by hosting a series of events and activities throughout the year.
- The Intergovernmental Panel on Climate Change released its fourth Assessment Report, which provided evidence that human activity is the main cause of climate change.
- The Great Recession, a severe worldwide financial crisis, began with the failure of several major investment banks and the collapse of the U.S house market.
- In July, the Seventh Art International Conference on AIDS took place in Mexico City.
- The 2007 Rugby World Cup was hosted in France and won by South Africa.
- The 2007 Cricket World Cup was hosted in West Indies and won by Australia.
- The first Google phone, the T-Mobile G1 was released in
October.
- In November, Afghan presidential election were held, re-electing Hamid Karzai.
- The Nobel Prize in Literature was awarded to Doris Lessing.