| Gaby | |
| Official Name: | Comune di Gaby Commune de Gaby |
| Coordinates: | 45.7044°N 7.8839°W |
| Province: | none |
| Frazioni: | Bouri, Chanton Desor, Chanton Desout, Chef-lieu (communal capital), Crusmato, Gattinéry, Gruba, Niel, Pont-de-Trentaz, Rubin, Serta Desor, Serta Desout, Tzendelabò, Pro dou Toucco, Yair Desout, Moulin, Palatz, Halberpein, Vourry, Yair Desor, Zappegly, Zuino |
| Mayor: | Pierluigi Ropele |
| Area Total Km2: | 32.46 |
| Population Total: | 423 |
| Population As Of: | 31 December 2022 |
| Population Demonym: | Gabençois |
| Elevation M: | 1047 |
| Saint: | Michael (archangel) |
| Day: | 29 September |
| Postal Code: | 11020 |
| Area Code: | 0125 |
Gaby (pronounced as /fr/; wae|Goobi; Issime wae|Überlann|lit=Upper Land; Valdôtain: Gabi) is a town and comune in the Aosta Valley region of northwestern Italy.
Gaby is home to the 19th century Sanctuary of Vourry.