Samalaju is a state constituency in Sarawak, Malaysia, that has been represented in the Sarawak State Legislative Assembly since 2016.
The state constituency was created in the 2015 redistribution and is mandated to return a single member to the Sarawak State Legislative Assembly under the first past the post voting system.
As of 2020, Samalaju has a population of 78,734 people.
According to the gazette issued on 31 October 2022, the Samalaju constituency has a total of 7 polling districts.