The Loddon River, an inland river of the north–central catchment, part of the Murray-Darling basin, is located in the lower Riverina bioregion and Central Highlands and Loddon Mallee regions of the Australian state of Victoria. The headwaters of the Loddon River rise on the northern slopes of the Great Dividing Range east of Daylesford and descend to flow north into the Little Murray River, near Swan Hill. The river is impounded by the Cairn Curran and Laanecoorie reservoirs.

Bridgewater On Loddon is a town in north central Victoria, Australia. The town is located on the Calder Highway, north-west of Bendigo, astride the Loddon River. At the 2021 census, Bridgewater On Loddon had a population of 341. The rural area which surrounds Bridgewater on Loddon is named simply "Bridgewater".