The Roman Catholic Diocese of Coroatá () is a diocese located in the city of Coroatá in the ecclesiastical province of São Luís do Maranhão in Brazil.
History 26 August 1977: Established as Diocese of Coroatá from the Metropolitan Archdiocese of São Luís do Maranhão
Bishops Bishops of Coroatá (Roman rite) Reinaldo Ernst Enrich (Heribert) Pünder † (5 May 1978 - 16 Jan 2011) Died Sebastião Bandeira Coêlho (16 Jan 2011–present)
Coadjutor bishop Sebastião Bandeira Coêlho (2010-2011)
Other priest of this diocese who became bishop José Valdeci Santos Mendes, appointed Bishop of Brejo, Maranhão in 2010
References GCatholic.org Catholic Hierarchy Diocese website (Portuguese)