Parwan is a town in Victoria, Australia, 45 km west of Melbourne's Central Business District. Predominantly Parwan lies within the local government area (LGA) of the Shire of Moorabool, but some of Parwan lies within the LGA of the City of Melton. Parwan recorded a population of 170 at the 2016 Census.
Parwan Railway Station Post Office opened on 1 September 1886, was renamed Parwan in 1914 and closed in 1962.
The Parwan Valley lies between the Brisbane Ranges, Werribee Gorge State Park and the You Yangs. Its nearest town is Bacchus Marsh. The Valley was used as farming land from the mid-1850s onwards, but after several decades of agricultural abuse the soils became extremely saline causing erosion all around the valley. By 1948 it was estimated that erosion in the valley had reduced the holding capacity of the nearby Melton Reservoir by 20%. The Victorian Government compulsorily acquired the land and has been attempting to rescue the valley ever since.
At the center of the valley is White Elephant Ridge, which demonstrates the effects of soil erosion. The valley was originally a seabed. 250 million years ago after the sea receded volcanic activity caused the valley to fault and drop down leaving two large escarpments on either side. Two creeks run through the valley; Parwan Creek to the west and Spring Creek to the east.