| Castiglione d'Adda | |
| Official Name: | Comune di Castiglione d'Adda |
| Coordinates: | 45.2167°N 50°W |
| Region: | Lombardy |
| Province: | Lodi (LO) |
| Frazioni: | Cassinette |
| Mayor: | Costantino Pesatori |
| Area Total Km2: | 12.98 |
| Population Footnotes: | [1] |
| Population Total: | 4659 |
| Population As Of: | 30 June 2017 |
| Population Demonym: | Castiglionesi |
| Elevation M: | 60 |
| Saint: | St. Mary |
| Day: | August 15 |
| Postal Code: | 26283 |
| Area Code: | 0377 |
Castiglione d'Adda (Lodigiano: Castiòn) is a town and comune in the province of Lodi, in Lombardy, northern Italy.
Sights include the medieval castle (later Palazzo Pallavicino Serbelloni), with a 16th-century façade, and the 16th century parish church.