Bacchus Marsh is a rural centre and regional locality in Victoria, Australia located approximately 57 kilometres (40 mi) north west of the state capital Melbourne and 15 kilometres (9 mi) west of Melton at a near equidistance to the major cities of Melbourne, Ballarat and Geelong. The estimated population of Bacchus Marsh urban area was 19,934 at June 2015. The State Suburb by the same name is home to 5,760 people and contains the central business district. Bacchus Marsh is the largest rural area in the local government area of Shire of Moorabool.
Traditionally a market garden area, producing a large amount of the region's fruits and vegetables in recent decades it has transformed into the main commuter town on the Melbourne-Ballarat corridor with its affordable starter homes proving popular.
It 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.