| En Name: | Ust-Ilga |
| Ru Name: | Усть-Илга |
| Coordinates: | 55.0083°N 105.0797°W |
| Map Label Position: | bottom |
| Federal Subject: | Irkutsk Oblast |
| Adm District Jur: | Zhigalovsky District |
| Inhabloc Cat: | Rural locality |
| Inhabloc Type: | Selo |
Ust-Ilga (ru|Усть-Илга) is a rural locality in Zhigalovsky District of Irkutsk Oblast, Russia. Population:
The village is about 23km (14miles) north of Zhigalovo, the district administrative center. It lies on the left bank of the Ilga river near its confluence with the Lena.[1]