Langkawi is a federal constituency in Langkawi District, Kedah, Malaysia, that has been represented in the Dewan Rakyat since 1995.
The federal constituency was created in the 1994 redistribution and is mandated to return a single member to the Dewan Rakyat under the first past the post voting system.
As of 2020, Langkawi has a population of 94,138 people.
According to the federal gazette issued on 18 July 2023, the Langkawi constituency is divided into 26 polling districts.