The Cricket World Cup is the premier international championship of men's One Day International (ODI) cricket. The event is organised by the sport's governing body, the International Cricket Council (ICC), with preliminary qualification rounds leading up to a finals tournament which is held every four years. The tournament is the world's fourth largest and most viewed sporting event. According to the ICC, it is the most important tournament and the pinnacle of achievement in the sport. The first Cricket World Cup contest was organised in England in 1975. A separate Women's Cricket World Cup has been held every four years since 1973.

The finals of the Cricket World Cup are contested by all ten Test-playing and ODI-playing nations, together with other nations that qualify through the World Cup Qualifier. Australia has been the most successful of the five teams to have won the tournament, taking four titles. The West Indies have won twice, while India, Pakistan, and Sri Lanka have each won once.

The 2007 Cricket World Cup matches were held between 13 March and 28 April 2007, in the West Indies. The 2007 tournament had sixteen teams competing in a pool stage (played in round-robin format), then a "super 8" stage, followed by semi-finals and a final. Australia defeated Sri Lanka in the final to retain the championship.