Hulu Rajang is a federal constituency in Kapit (Bukit Mabong District, Kapit District & Belaga District) and Bintulu divisions (Tatau District & Sebauh District), Sarawak, Malaysia, that has been represented in the Dewan Rakyat since 1971.
The federal constituency was created in the 1968 redistribution and is mandated to return a single member to the Dewan Rakyat under the first past the post voting system.
Spanning an area of over 34,000 km<sup>2</sup>, almost the size of the state of Pahang, Hulu Rajang is the largest parliamentary constituency in Malaysia. Consequently it also has the lowest population density, with only 1 person per sq km.
https://ge15.orientaldaily.com.my/seats/sarawak/p As of 2020, Hulu Rajang has a population of 43,394 people.
According to the gazette issued on 31 October 2022, the Hulu Rajang constituency has a total of 15 polling districts.