| Trenzano | |
| Official Name: | Comune di Trenzano |
| Coordinates: | 45.4833°N 11°W |
| Province: | (BS) |
| Frazioni: | Bargnana, Convento, Cossirano, Pieve |
| Mayor: | Italo Spalenza |
| Area Total Km2: | 20 |
| Population Footnotes: | [1] |
| Population Total: | 5523 |
| Population As Of: | 31 December 2011 |
| Population Demonym: | Trenzanesi |
| Postal Code: | 25030 |
| Area Code: | 030 |
| Istat: | 017190 |
| Fractions: | Berlingo, Brandico, Castrezzato, Comezzano-Cizzago, Corzano, Maclodio, Rovato |
| Fiscal Code: | L380 |
Trenzano (Brescian: Trensà; Latin: Terentianus; Terrae-enz) is a comune in the province of Brescia, in Lombardy.