Streatham South ward is an administrative division of the London Borough of Lambeth, United Kingdom. It is the most southerly ward of the borough and has borders with Croydon, Merton, and Wandsworth. The ward includes the neighbourhoods of:
Streatham South ward is located in the Streatham Parliamentary constituency.
At the Lambeth Council elections, 2010 residents of Streatham South ward elected three Labour Party Councillors.