The Taponga River, an inland perennial river of the Goulburn Broken catchment, part of the Murray-Darling basin, is located in the lower South Eastern Highlands bioregion, Alpine and Northern Country/North Central regions of the Australian state of Victoria.

It flows from the northwestern slopes of the Australian Alps, north and joins with the Big River.

[3] The name of the river is derived from the Aboriginal Taungurung word tap, meaning a bronzewing pigeon.

[4] The river is popular for fishing, with abundant rainbow trout to 220 grams (7.8 oz) and a few large brown trout in the period from April to June.

[5] A camping area is available, approximately 19 kilometres (12 mi) east of Marysville on the Eildon–Jamieson Road or the Big River State Forest Road.