| | Greenpia Ena | Ena, Gifu, Japan | - | ≤ | - |
| | Griffen Amusement Park | Jacksonville Beach, Florida, United States | - | - | - |
| Gröverland | Gadenstedt, Lower Saxony, Germany | - | s | - |
| | Grove Land | St. Clears, Carmarthenshire, Wales, United Kingdom | - | | - |
| | Grundy's Entertainment Centre | Surfers Paradise, Queensland, Australia | - | | - |
| | Guangzhou Luhu Children's Park | Yuexiu, Guangzhou, Guangdong, China | - | ≤ | - |
| Guang Zhou Space Flight Happiness World | Tianhe, Guangzhou, Guangdong, China | - | ≤ | - |
| | Guatemala National Fair | Guatemala City, Guatemala, Guatemala | - | ≤ | - |
| | Gulf Shores Amusement Park | Gulf Shores, Alabama, United States | - | - | - |
| Gulliverlandia | Lignano Sabbiadoro, Friuli-Venezia Giulia, Italy | - | ≤ | - |
| Gulliver-Welt | Saarbrücken, Saarland, Germany | - | | - |
| Gumbuya World | Tynong , Victoria, Australia | Operating | | 3 |
| | Guobaying Amusement Park | Jiawang, Xuzhou, Jiangsu, China | - | | - |
| | Gwynn Oak Park | Baltimore, Maryland, United States | - | - | - |
| | Habana Park | Havana, Havana, Cuba | - | ≤ | - |
| Habtoorland | Jamhour Haret El Sit, Mount Lebanon, Lebanon | SBNO | | - |
| | Hague Park | Jackson, Michigan, United States | - | ≤ | - |
| | Haiyu Dreamland | Chengyang, Qingdao, Shandong, China | Operating | | 2 |
| | Haiyue Lake Park | Dongguan, Guangdong, China | - | - | - |
| | Hama Blanca | Shirahama, Nishimuro, Wakayama, Japan | - | | - |
| | Hamel's Park | Shreveport, Louisiana, United States | - | - | - |
| | Hangzhou Children's Park | Shangcheng, Hangzhou, Zhejiang, China | - | | - |
| | Hanlan's Point | Toronto, Ontario, Canada | - | - | - |
| | Hanshin Park | Koshien, Nishinomiya, Hyōgo, Japan | - | | - |