Bacchus Marsh is an urban centre in Victoria. It is located approximately 50 kilometres west of Melbourne. The town is almost equally distant from the major cities of Melbourne, Ballarat and Geelong.
The formerly small town was reclassified as a "Significant Urban Area" by the Australian Bureau of Statistics in 2011 and officially became part of the Melbourne metropolitan area.
Traditionally a market garden area, it produces a large amount of the region's fruits and vegetables, and in recent decades has transformed into the main commuter town on the Melbourne-Ballarat corridor.
The town was named after one of its original inhabitants, Captain William Henry Bacchus, who saw the great value of this locality as it was situated on two rivers — the Lerderderg and Werribee.