Kiulu is a state constituency in Sabah, Malaysia, that has been represented in the Sabah State Legislative Assembly.

It is mandated to return a single member to the Assembly under the first-past-the-post voting system.

As at 20 October 2020, this constituency contains the polling districts of Pekan Nabalu, Kilang Bata, Telibong, Rangalau, Pekan Kiulu Pusat, Malangang, Togop, Kelawat, Bongol, Simpangan, Taginambur, Pukak, Mantob, Pahu, Tiong Simpodon, Poring, Tomis and Tudan.

[1] Ethnic breakdown of Kiulu's electorate as of 2020 According to the gazette issued on 31 October 2022, the Kiulu constituency has a total of 15 polling districts.

This Malaysian elections-related article is a stub.