Bonon Department is a department of Marahoué Region in Sassandra-Marahoué District, Ivory Coast. In 2021, its population was 167,397 and its seat is the settlement of Bonon. The sub-prefectures of the department are Bonon, and Zaguiéta.
Bonon Department was created in 2020 by dividing the Bouaflé Department, in the Marahoué Region. In 2021, districts were reinstated, and the Marahoué region was included in the Sassandra-Marahoué District.