The ICC 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 fourth-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 and India have won twice, while Pakistan and Sri Lanka have each won once.
Eight teams participated in the first tournament: Australia, England, India, New Zealand, Pakistan, and the West Indies (the six Test nations at the time), together with Sri Lanka and a composite team from East Africa. One notable omission was South Africa, who were banned from international cricket due to apartheid. The tournament was won by the West Indies, who defeated Australia by 17 runs in the final at Lord's Cricket Ground.
The 2011 Cricket World Cup was co-hosted by Bangladesh, India, and Sri Lanka from 19 February to 2 April 2011. 14 countries participated in the tournament. India won the cup by defeating Sri Lanka by 6 wickets in the final in Mumbai on 2 April and became the first team to win the World Cup final on home soil. The next World Cups will be hosted by Australia and New Zealand in 2015, and England and Wales in 2019.