Rockbank is a township and rural locality near Melbourne, Victoria, Australia, 29 km west of Melbourne's Central Business District. Its local government area is the City of Melton. At the 2011 Census, Rockbank had a population of 1,349.
Rockbank Post Office opened on 1 January 1862.
The area lies east of the township of Melton and west of the suburb of Caroline Springs. The land contains many large volcanic rocks making it poor for cultivating crops. The rocks have been used to build walls between paddocks - characteristic of the area west of Melbourne. Mount Cottrell is the highest land point in the vicinity.
The railway station is on the Melton line. Rockbank is also served by the Metlink Route 456 bus that runs along the Western Freeway, linking Melton and Sunshine.
The rich, red volcanic soil in the area has helped build the reputation of local wineries. Rockbank is also the host to Victoria's Annual Olive Festival. The earlier agricultural activities date back to the pastoral exploits of William Cross Yuille on the plains.
The town has an Australian rules football team, competing in the Riddell District Football League and a netball team.