Bruce South was a federal electoral district in Ontario, Canada, that was represented in the House of Commons of Canada from 1867 to 1882 and from 1903 to 1935. The original district was created by the British North America Act of 1867. It consisted of the Townships of Kincardine (including the Village of Kincardine), Greenock Brant, Huron, Kinloss, Culross, and Carrick. It was abolished in 1882 when it was redistributed between Bruce East and Bruce West ridings. It was recreated in 1903 from those two ridings. The second incarnation of the south riding consisted of the townships of Brant, Carrick, Culross, Elderslie, Greenock, Huron, and Kinloss, the town of Walkerton, and the villages of Chelsey, Lucknow, Paisley and Teeswater in the county of Bruce. In 1924, it was redefined to consist of the part of the county of Bruce lying south of and including the townships of Huron, Kinloss, Greenock and Elderslie. The electoral district was abolished in 1933 when it was merged into Bruce riding.

Members of Parliament

This riding elected the following members of Parliament:

Election results

1867-1882

On Mr. Blake's appointment as Minister without Portfolio, 7 November 1873: By-Election: On Mr. Blake's appointment as Minister of Justice, 19 May 1875:

1904-1935

Mr. J.J. Donnelly summoned to the Senate, 26 May 1913: