Sepang is a federal constituency in Sepang District and Kuala Langat District, Selangor, Malaysia, that has been represented in the Dewan Rakyat since 1959.
The federal constituency was created in the 1958 redistribution and is mandated to return a single member to the Dewan Rakyat under the first past the post voting system.
According to the federal gazette issued on 18 July 2023, the Sepang constituency is divided into 51 polling districts.