Towallum River, a perennial river of the Clarence River catchment, is located in the Northern Tablelands region of New South Wales, Australia.

Towallum River rises on the slopes of the Great Dividing Range near Moleton, northwest of Coramba, and flows generally north and northwest before reaching its confluence with the Kangaroo River, below Koukandowie Mountain; over its 23 kilometres (14 mi) course.

• Rivers of New South Wales
• List of rivers of Australia
• List of rivers of New South Wales (L–Z)

30°03′S 152°54′E / 30.050°S 152.900°E / -30.050; 152.900