| Odalengo Grande | |
| Official Name: | Comune di Odalengo Grande |
| Coordinates: | 45.1167°N 18°W |
| Region: | Piedmont |
| Province: | Alessandria (AL) |
| Mayor: | Fabio Olivero (elected 16 May 2011) |
| Area Total Km2: | 15.43 |
| Population Total: | 418 |
| Population As Of: | 30 November 2017[1] |
| Population Demonym: | Odalenghesi |
| Elevation M: | 381 |
| Postal Code: | 15020 |
| Area Code: | 0142 |
Odalengo Grande (Audalengh Grand in Piedmontese) is a comune (municipality) in the Province of Alessandria in the Italian region Piedmont, located about 35km (22miles) east of Turin and about 40km (30miles) northwest of Alessandria.
Odalengo Grande borders the following municipalities: Cerrina Monferrato, Murisengo, Odalengo Piccolo, Robella, Verrua Savoia, Villadeati, and Villamiroglio.