| Gran Ega | |
| Source1 Location: | Val Badia (South Tyrol) |
| Mouth Coordinates: | 46.7843°N 11.8906°W |
| Subdivision Type1: | Country |
| Length: | 34.7km (21.6miles) |
| Basin Size: | 390km2 |
The Gran Ega (alternative Ladin name: Ghaidra; German: Gader; Italian: Gadera) is the main river of the Val Badia in South Tyrol, Italy. Its name literally translates to great water.