| Caldonazzo | |
| Official Name: | Comune di Caldonazzo |
| Coordinates: | 46°N 27°W |
| Province: | Trentino (TN) |
| Frazioni: | Brenta, Lochere, Monterovere (Monteruf), Piatéle, Giàmai, Dossi, Bagiàni, Maso Stanchi, Maso Bernabè, Maso Gasperi, Maso alla Costa |
| Mayor: | Giorgio Schmidt |
| Area Total Km2: | 21 |
| Population Total: | 3067 |
| Population As Of: | 31 August 2007 |
| Population Demonym: | Caldonazzesi o Panizzari (in local dialect) |
| Elevation M: | 530 |
| Saint: | Saint Sixtus II |
| Day: | 6 August |
| Postal Code: | 38052 |
| Area Code: | 0461 |
Caldonazzo (German: Gallnötsch, Kalnètsch[1]) is a commune in Valsugana, in Trentino, northern Italy.
The nearby Lake of Caldonazzo is the source of the Brenta River.