Haut-Sassandra Region is one of the 31 regions of Ivory Coast and is one of two regions in Sassandra-Marahoué District. The region's seat is Daloa. The region's area is 15,190 km²,[2][4] and its population in the 2021 census was 1,739,697,[3] making it the most populous region of Ivory Coast.
As part of the 2011 administrative reorganisation of the subdivisions of Ivory Coast, Haut-Sassandra was converted into a second-level administrative region and became part of the new first-level Sassandra-Marahoué District.[5] No territorial changes were made to Haut-Sassandra as a result of the reorganisation.