The Water Cube (水立方), fully known as the National Aquatics Centre (国家游泳中心), is a swimming center at the Olympic Green in Chaoyang, Beijing, China.

The Water Cube was originally constructed to host the aquatics competitions at the 2008 Summer Olympics and Paralympics. During the 2008 Olympics—where it hosted diving, swimming and synchronized swimming events—25 world records were broken in this facility. In July 2010, a renovation of the facility was completed, which included the addition of a 12,000 m² (130,000 sq ft) public water park. After renovation and adaptive configuration, the Water Cube also hosted the 2022 Winter Olympics and Paralympics.