Nanton was a provincial electoral district in Alberta, Canada, mandated to return a single member to the Legislative Assembly of Alberta from 1909 to 1926.
The Nanton electoral district was formed prior to the 1909 Alberta general election from a portion of the High River and Macleod electoral districts.
From 1924 to 1956, the district used instant-runoff voting to elect its MLA.
Prior to the 1930 Alberta general election, the Nanton electoral district was merged with a portion of the Claresholm electoral district to form the Nanton-Claresholm electoral district.
The electoral district was named after the town of Nanton.