| Castelnuovo Bocca d'Adda | |
| Official Name: | Comune di Castelnuovo Bocca d'Adda |
| Coordinates: | 45.1167°N 61°W |
| Region: | Lombardy |
| Province: | Lodi (LO) |
| Mayor: | Marcello Schiavi (since May 26, 2014) |
| Area Total Km2: | 20.33 |
| Population Total: | 1619 |
| Population As Of: | 30 June 2017[1] |
| Population Demonym: | Castelnovesi |
| Elevation M: | 49 |
| Postal Code: | 26843 |
| Area Code: | 0377 |
Castelnuovo Bocca d'Adda (Lodigiano: Castelnöu) is a comune (municipality) in the Province of Lodi in the Italian region Lombardy, located about 70km (40miles) southeast of Milan and about 35km (22miles) southeast of Lodi.
Castelnuovo Bocca d'Adda borders the following municipalities: Crotta d'Adda, Maccastorna, Meleti, Monticelli d'Ongina, Caselle Landi, Caorso.