The Liwagu River (Malay: Sungai Liwagu) is a river in Sabah, Malaysia, flowing eastwards off the southern slope of Mount Kinabalu and then into the Labuk River.
The Liwagu River Trail in Mount Kinabalu National Park is considered to be a preeminent birder's trail. The trail varies between open vistas and dense thickets, but is predominantly open, skirting the ridge-top as it goes along the north side of the river gorge. Bird species include: Chlamydochaera jefferyi; Chlorocharis emiliae emiliae; Eumyias indigo cerviniventris, Harpactes whiteheadi; Megalaima pulcherrima; Napothera crassa Luzon; and Zosterops atricapilla.
- (1989) "Environmental impact assessment of Liwagu Hydro power project" Sub-study No. 3: Ecology pp. 5–13. Universiti Kebangsaan Malaysia.
Coordinates: 5°43′3″N 116°51′9″E / 5.71750°N 116.85250°E