The Roman Catholic Archdiocese of Gagnoa (Latin: Gagnoaën(sis)) is the Metropolitan See for the Ecclesiastical province of Gagnoa in Côte d'Ivoire.
The seat of the archbishop is Cathédrale Sainte-Anne in Gagnoa.
Coordinates: 6°08′00″N 5°56′00″W / 6.1333°N 5.9333°W