| | Glasgow Garden Festival | Glasgow, Glasgow, Scotland, United Kingdom | - | - | - | - |
| | Glendale Park | Nashville, Tennessee, United States | - | | - | |
| | Glen Haven Park | Rochester, New York, United States | - | | - | ≥ |
| | Glen Island Park | New Rochelle, New York, United States | - | - | - | - |
| | Glen Park | Williamsville, New York, United States | - | - | - | |
| | Glico's | Manila, Metro Manila, Philippines | - | - | - | |
| | Glico's Great Adventure | Makati, Metro Manila, Philippines | - | | - | s |
| Go Bananas | Norridge, Illinois, United States | - | ≤ | - | |
| | Go Bonkers Now | Arlington Heights, Illinois, United States | - | | - | |
| | Golden City | Brooklyn, New York, United States | - | | - | |
| | Golden Gate International Exposition | San Francisco, California, United States | - | | - | |
| | Golden Sandy Beach | Huangdao, Qingdao, Shandong, China | - | - | - | |
| | Gordon Gardens | Cleveland, Ohio, United States | - | | - | |
| | Gordon State Park | Saint Marys, Ohio, United States | - | | - | |
| Granada Studios | Manchester, Greater Manchester, England, United Kingdom | - | - | - | |
| Grand Mal Bekasi | Bekasi City, West Java, Indonesia | - | - | - | ≤ |
| | Grand Pier | Weston-Super-Mare, Somerset, England, United Kingdom | - | | - | - |
| | Grand View Park | Little Falls, New Jersey, United States | - | | - | ≥ |
| | Granite Park | Fresno, California, United States | - | | - | - |
| | Great Adventure Amusement Park | Flushing, New York, United States | - | - | - | s |
| | Great Bradford Exhibition | Bradford, West Yorkshire, England, United Kingdom | - | | - | |
| | Greater America Exposition | Omaha, Nebraska, United States | - | | - | |
| | Greater Island Park | Easton, Pennsylvania, United States | - | | - | |
| | Greater Ontario Beach | Rochester, New York, United States | - | ≤ | - | |