| Province: | Ontario |
| Fed-Status: | defunct |
| Fed-Created: | 1924 |
| Fed-Abolished: | 1933 |
| Fed-Election-First: | 1925 |
| Fed-Election-Last: | 1930 by-election |
Timiskaming South was a Canadian electoral district represented in the House of Commons of Canada from 1925 to 1935. It was located in the northeastern part of the province of Ontario. It was created in 1924 from parts of Nipissing and Timiskaming ridings.
It consisted of the southern portion of Timiskaming District, along with portions of Nipissing District and Sudbury District.
The electoral district was abolished in 1933 when it was redistributed between Nipissing and Timiskaming ridings.
This riding has elected the following members of Parliament:
|- |Conservative|Ernest Frederick Armstrong|align="right"|5,362 |Labour|Malcolm Lang|align="right"| 4,558 |Labour|Harold Milton Tremaine Welch|align="right"|1,882|}|- |Labour|Malcolm Lang|align="right"| 7,309 |Conservative|Ernest Frederick Armstrong|align="right"|6,411 |}|- |Conservative|Wesley Ashton Gordon|align="right"| 8,729 |Liberal–Labour|Malcolm Lang|align="right"| 7,195 |}|- |Conservative|Hon. Wesley Ashton Gordon|align="right"| acclaimed |}