The 2021 ICC Men's T20 World Cup was the seventh edition of the Men's T20 World Cup, formerly known as the ICC World Twenty20, a Twenty20 cricket tournament that took place from 17 October to 14 November 2021. The tournament was hosted by United Arab Emirates and Oman. It was scheduled to be hosted by Australia in 2020 but later postponed to 2021 due to the COVID-19 Pandemic.

The tournament was scheduled to be held in Australia from 18 October to 15 November 2020. Due to the COVID-19 pandemic, the tournament was postponed to 2021, and relocated to India due to Australian entry restrictions; Australia would be awarded the 2022 tournament instead. Due to concerns over the COVID-19 pandemic situation in India, the tournament was re-located to sites in the United Arab Emirates and Oman, with the Board of Control for Cricket in India remaining the official hosts.

The West Indies were the defending champions, but were eventually eliminated in the Super 12 stage. New Zealand became the first team to reach the final, after they beat England by five wickets in the semi-finals. It was the first time that New Zealand had qualified for a T20 World Cup final. They were joined in the final by Australia, who beat Pakistan by five wickets in the second semi-final. It was the second time that Australia had qualified for the final of the T20 World Cup, after reaching the final of the 2010 tournament. In the final, Australia beat New Zealand by eight wickets to win their first T20 World Cup. Mitchell Marsh was named the Player of the Match, with David Warner being named the Player of the Tournament.