Riosucio (Spanish pronunciation: [rjo'susjo]) is a municipality and town in the Department of Chocó, Colombia. It is located in the region of Urabá, on the Atrato River basin. It borders Panama and the municipality of Unguía at its north, Turbo, Mutatá (both in Antioquia), Juradó and Panama at the east, and Carmen del Darien and Solano Bay at its south. The town is inaccessible by roads and there is no airport, the river is the main system of transportation and access.