2021 Summer World University Games
| Host city | Chengdu, Sichuan, China |
|---|---|
| Motto | Chengdu Makes Dreams Come True (Chinese: 成都成就梦想) |
| Nations | 116 |
| Athletes | 5059 |
| Sport | 18 |
| Events | 269 |
| Opening | 28 July 2023 |
| Closing | 8 August 2023 |
| Opened by | Xi Jinping, CCP General Secretary and President of China |
| Athlete's Oath | Tang Ziting |
| Judge's Oath | Liu Jiang |
| Torch lighter | Ye Guangfu and 30 other university sport athletes (representing each edition held before) |
| Main venue | Dong'an Lake Sports Center (opening ceremony) Chengdu Open Air Music Park (closing ceremony) |
| Website | 2021chengdu.com (archived) |
The 2021 Summer World University Games (2021年夏季世界大学生运动会), officially known as the XXXI Summer World University Games and also known as Chengdu 2021, was a multi-sport event sanctioned by the International University Sports Federation (FISU), held from 28 July to 8 August 2023 in Chengdu, Sichuan, China. It was the fourth time the Games was hosted in China. This is the first time the Games was referred to as the "Summer World University Games" rather than the "Summer Universiade."
The Games were originally scheduled to be held between 16 and 27 August 2021. On 2 April 2021, it was announced that the Games would be postponed to 2022 due to the COVID-19 pandemic and the postponement of the 2020 Summer Olympics to 2021 for the same reason. In May 2021, FISU rescheduled the event to 26 June – 7 July 2022. On 6 May 2022, FISU postponed the event again to 2023 due to COVID-19 concerns; the Games effectively replaced the 2023 Summer World University Games in Yekaterinburg, whose hosting rights had been stripped due to the Russian invasion of Ukraine; they would still be referred to as the 2021 Games for branding and marketing purposes.
The games marked the 15th anniversary of the 2008 Summer Olympics in Beijing, China.