Lumut is a federal constituency in Manjung District, Perak, Malaysia, that has been represented in the Dewan Rakyat since 1974.
The federal constituency was created in the 1974 redistribution and is mandated to return a single member to the Dewan Rakyat under the first past the post voting system.
During 2016 redelineation, the Sitiawan state constituency was transferred to Beruas, reducing Lumut from three to only two constituencies.
As of 2020, Lumut has a population of 124,320 people.
According to the federal gazette issued on 31 October 2022, the Lumut constituency is divided into 26 polling districts.