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 of 2020, Kiulu has a population of 17,565 people.
According to the gazette issued on 31 October 2022, the Kiulu constituency has a total of 15 polling districts.