Brant South was a federal and provincial electoral district in Ontario, Canada, that was represented in the Canadian House of Commons from 1867 to 1904, and in the Legislative Assembly of Ontario from 1867 to 1923.
It was also called the South Riding of Brant. Brant County was named after Joseph Brant, a Mohawk Chief originally from New York State who settled the area, centred on Brantford.
The federal riding was created by the British North America Act of 1867 which divided the county of Brant into two ridings: Brant North and Brant South according to a traditional division. In 1882, the South Riding of Brant was defined to consist of the townships of West Brantford, Onondaga and Tuscarora, the city of Brantford and the town of Paris.
The electoral district was abolished in 1903 when it was merged into Brantford riding.
The first Member of Parliament for Brant South, elected in 1867 was Edmund Burke Wood. Wood was also elected to the Provincial Parliament. Eventually an act was passed to abolish dual representation.
In 1872, the Liberal candidate, William Paterson (a biscuit manufacturer) won the riding, and remained Member of Parliament until 1896, when he was defeated by Robert Henry (a grocer, and Conservative).