The ICC T20 world cup win list takes place every 2 years. Since the first one in 2007 six tournaments have been played to date. The current West Indies title holders are the only team to have won the tournament more than once.
The ICC Men’s T20 World Cup (previously known as ICC World Twenty20) is the Twenty20 International cricket championship. Organized by the governing body of cricket, the International Cricket Council (ICC), the competition is currently made up of 16 teams, consisting of the top ten teams from the rankings on the specified deadline and six other teams selected through the T20 World Cup qualifier.
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Check wikipedia: ICC Men’s T20 World Cup