| San Giovanni di Fassa | |
| Official Name: | Comune di San Giovanni di Fassa |
| Pushpin Map: | Italy Trentino-South Tyrol#Italy |
| Coordinates: | 46.4302°N 11.6858°W |
| Region: | Trentino-Alto Adige/Südtirol |
| Province: | Trentino (TN) |
| Frazioni: | Costa, Larzonei, Monzon, Passo Carezza, Pera di Fassa, Pozza di Fassa, Ronch, San Giovanni, Tamion, Vallonga, Vigo di Fassa |
| Area Total Km2: | 38.54 |
| Population Footnotes: | [1] |
| Population Total: | 3528 |
| Population As Of: | 31 December 2016 |
| Postal Code: | 38036 |
| Area Code: | 0462 |
San Giovanni di Fassa (in ladin: Sèn Jan) is a comune (municipality) in Trentino in the northern Italian region Trentino-Alto Adige/Südtirol. It was formed on 1 January 2018 after the merger of the former comuni of Pozza di Fassa and Vigo di Fassa. It is one of I Borghi più belli d'Italia ("The most beautiful villages of Italy").[2]