Kuala Rajang is a state constituency in Sarawak, Malaysia, that has been represented in the Sarawak State Legislative Assembly from 1969 to 1991, from 2016 to present.

The state constituency was created in the 1968 redistribution and is mandated to return a single member to the Sarawak State Legislative Assembly under the first past the post voting system.

According to the gazette issued on 31 October 2022, the Kuala Rajang constituency has a total of 6 polling districts.

"Federal Government Gazette - Notice of Contested Election, State Legislative Assembly of the State of Sarawak [P.U.

Attorney General's Chambers of Malaysia.