| Vagli Sotto | |
| Official Name: | Comune di Vagli Sotto |
| Coordinates: | 44.1167°N 27°W |
| Region: | Tuscany |
| Province: | Lucca (LU) |
| Frazioni: | Roggio, Vagli Sopra |
| Mayor: | Giovanni Lodovici |
| Area Total Km2: | 41.0 |
| Population Total: | 922 |
| Population As Of: | 31 March 2017[1] |
| Population Demonym: | Vaglini, Roggesi (in Roggio) |
| Elevation M: | 600 |
| Postal Code: | 55030 |
| Area Code: | 0583 |
Vagli Sotto is a comune (municipality) in the Province of Lucca in the Italian region of Tuscany, located about 90km (60miles) northwest of Florence and about 35km (22miles) northwest of Lucca.
Sotto borders the following municipalities: Camporgiano, Careggine, Massa, Minucciano, Stazzema. The Lake of Vagli, created by a dam in 1947, and the abandoned village of Fabbriche di Careggina, are located nearby.
The town contains the Romanesque church of San Regolo.