| Gandilandia Parque de Atracciones | Grau i Platja, Valencian Community, Spain | SBNO | ≤ | 1 |
| Gantang Park | Xunyang, Jiujiang, Jiangxi, China | - | ≤ | - |
| Ganzhou Forest Zoo | Zhanggong, Ganzhou, Jiangxi, China | - | - | - |
| | Garden of Dreams Hongkha Vientiane | Vientiane, Vientiane Prefecture, Laos | - | | - |
| Gaya Land | Gimhae, Gyeongsangnam-do, South Korea | Operating | | 1 |
| | Gay Dolphin Park | Myrtle Beach, South Carolina, United States | - | - | - |
| | Gayway | Seaside, Oregon, United States | - | - | - |
| Geauga Lake & Wildwater Kingdom | Aurora, Ohio, United States | - | | - |
| | Genkai Sculpture Cape Koinoura | Fukutsu, Fukuoka, Japan | - | | - |
| Genting SkyWorlds | Genting Highlands, Pahang, Malaysia | Operating | | 4 |
| | Gent Universal Exposition | Ghent, East Flanders, Flemish Region, Belgium | - | | - |
| | Ghost Town on the River | Louisville, Kentucky, United States | - | | - |
| | Ghost Town Village | Maggie Valley, North Carolina, United States | SBNO | | 2 |
| | Giant Fun Abha | Abha, 'Asir, Saudi Arabia | - | - | - |
| | Giant Fun Al Khobar | Al Khobar, Eastern Province, Saudi Arabia | - | - | - |
| | Giant Fun Jeddah | Jeddah, Makkah, Saudi Arabia | - | - | - |
| | Gifu Chubu Mirai Expo | Gifu, Gifu, Japan | - | | - |
| Gillian's FunLand | Sea Isle City, New Jersey, United States | - | | - |
| Gillian's Wonderland Pier | Ocean City, New Jersey, United States | - | | - |
| Girabilandia | Giugliano in Campania, Campania, Italy | - | - | - |
| | Girne Lunapark | Karsiyaka, Izmir, İzmir, Turkey | - | ≤ | - |
| | Gladness Island of Oriental Sundown | Huangyan, Taizhou, Zhejiang, China | - | ≤ | - |
| | Glasgow Empire Exhibition | Glasgow, Glasgow, Scotland, United Kingdom | - | | - |
| | Glasgow Garden Festival | Glasgow, Glasgow, Scotland, United Kingdom | - | - | - |