| Ligosullo | |
| Coordinates: | 46.5333°N 18°W |
| Region: | Friuli-Venezia Giulia |
| Province: | Udine (UD) |
| Comune: | Treppo Ligosullo |
| Population Total: | 201 |
| Population As Of: | Dec. 2004 |
| Postal Code: | 33020 |
| Area Code: | 0433 |
Ligosullo is a frazione of Treppo Ligosullo in the Province of Udine in the Italian region Friuli-Venezia Giulia, located about 110km (70miles) northwest of Trieste and about 50km (30miles) north of Udine. It was a separate comune until February 1 2018, when it was merged with Treppo Carnico, which created the Treppo Ligosullo comune.