| | Washington Park | Michigan City, Indiana, United States | - | - | - |
| | Washington Park | Westville, New Jersey, United States | - | | - |
| | Washington Park | Philadelphia, Pennsylvania, United States | - | ≤ | - |
| Washington State Fair | Puyallup, Washington, United States | Operating | | 2 |
| | Watch Tower Amusement Park | Rock Island, Illinois, United States | - | | - |
| Water Garden Salmaniya | Manama, Capital, Bahrain | Operating | ≤ | - |
| | Water Hollow Ranch | Bluebell, Utah, United States | Operating | ≤ | 1 |
| | Waterlands Resort | Bao'an, Shenzhen, Guangdong, China | Operating | ≤ | 1 |
| Water Park | Xinhua, Shijiazhuang, Hebei, China | Operating | ≤ | 2 |
| Water Park | Faliraki, South Aegean, Greece | Operating | ≤ | - |
| | Water Park | Yichun, Yichun, Heilongjiang, China | - | ≤ | - |
| | Waterville USA | Gulf Shores, Alabama, United States | Operating | | - |
| | Waukesha Beach | Pewaukee, Wisconsin, United States | - | | - |
| | Waverly Beach | Beloit, Wisconsin, United States | - | - | - |
| | Waverly Park | Lansing, Michigan, United States | - | | - |
| Web Adventure Park | York, North Yorkshire, England, United Kingdom | Operating | ≤ | 1 |
| | Wedgewood Park | Oklahoma City, Oklahoma, United States | - | | - |
| | Wedgewood Village | Oklahoma City, Oklahoma, United States | - | | - |
| | Wee Tee | Toledo, Ohio, United States | - | - | - |
| Weibin Park | Qindu, Xianyang, Shaanxi, China | Operating | ≤ | - |
| Weidu Water World | Nanjiao, Datong, Shanxi, China | Operating | - | 1 |
| | Weihaigang Park | Huancui, Weihai, Shandong, China | Operating | ≤ | - |
| | Weihe Guojia Shuili Scenic Area | Zhucheng, Weifang, Shandong, China | Operating | ≤ | 1 |
| | Weihe Park | Meixian, Baoji, Shaanxi, China | Operating | ≤ | - |