Gagnoa is a city located in south-central Ivory Coast. It serves as the administrative seat for both the Gôh Region and the Gôh-Djiboua District. Additionally, the city functions as a commune and is the seat of the Gagnoa Department, where it also holds the status of a sub-prefecture.
According to the 2014 census, Gagnoa had a population of 160,465 residents. Based on these figures, it ranks as the seventh-largest city in Ivory Coast.