Oakleigh South is a suburb in Melbourne, Victoria, Australia, 17 km south-east of Melbourne's central business district. Its local government area is the City of Monash and the City of Kingston. At the 2011 Census, Oakleigh South had a population of 9,140.
A largely residential suburb, its boundaries are North Road to the north, South Road to the south, Warrigal Road to the west and Huntingdale/Clarinda Roads to the east.
Oakleigh South Post Office opened on 1 September 1936.