Electoral district of Sandridge, Electoral district in Victoria, Australia

Sandridge was an electoral district of the Victorian Legislative Assembly from 1859 to 1889. The Electoral Act Amendment Act 1858 set its bounds: from the junction of the Yarra and Saltwater rivers, along the Yarra to a point due south of the Gas Works, then south-east to the shore of Hobson's Bay about twenty chains west of the Battery, and back by the coast and the Yarra.

The district was created in 1859 to represent the growing coastal settlements south of Melbourne. It ceased to exist in 1889 when it was renamed Port Melbourne to match the suburb's official name change.

The district featured continuous representation by unaligned members including William Nicholson, David Moore, David Thomas, Sir John Madden, and Frederick Derham.

Since the district no longer exists as a political unit, visitors can understand its former extent by looking at current Port Melbourne boundaries. Local historical records and maps show where the old boundaries ran and how the area has developed.

Sandridge was abolished in 1889 and replaced by Port Melbourne, reflecting the suburb's name change. Frederick Derham, the seat's last member, continued as member for Port Melbourne. The 1858 Act fixed the boundary at a point on Hobson's Bay about twenty chains west of the Battery.