Cape Breton South is a former provincial electoral district in Nova Scotia, Canada which existed from 1933 to 2013. It elected one member of the Nova Scotia House of Assembly. In its last configuration, the district included Sydney and its western suburbs until the North West Arm and south along the Sydney River until Blacketts Lake. In 1933, the County of Cape Breton was divided into five electoral districts, one of which was named Cape Breton South. In 2003, it lost part of the Ashby area to Cape Breton Nova and gained Balls Creek and the Coxheath area. Following the 2012 electoral boundary review, the district was dissolved into Northside-Westmount, Sydney-Whitney Pier and Sydney River-Mira-Louisbourg.

Members of the Legislative Assembly

The electoral district was represented by the following members of the Legislative Assembly:

Election results

1933

1937

1941

1945

1949

1953

1956

1960

1963

1967

1970

1974

1978

1981

1984

1988

1993

1998

1999

2003

2006

2009