| Llanquihue River | |
| Source1 Location: | Fui River, Neltume River |
| Subdivision Type1: | Country |
| Subdivision Name1: | Chile |
| Mouth Elevation: | 130m (430feet) |
Llanquihue River (Spanish; Castilian: Río Llanquihue) is a river in the commune of Panguipulli, southern Chile. It is formed by the union of Neltume River and Fui River.[1] Llanquihue River flows in a south and westward and outflows in Panguipulli Lake.[2]