Dusun Tua is a state constituency in Selangor, Malaysia, that has been represented in the Selangor State Legislative Assembly since 1974. It has been represented by Johan Abd Aziz of Barisan Nasional (BN) since 2023.
The state constituency was created in the 1974 redistribution and is mandated to return a single member to the Selangor State Legislative Assembly under the first past the post voting system.
According to the gazette issued on 30 March 2018, the Dusun Tua constituency has a total of 18 polling districts.