The Roman Catholic Diocese of Criciúma () is a diocese located in the city of Criciúma in the ecclesiastical province of Florianópolis in Brazil.
History 27 May 1998: Established as Diocese of Criciúma from the Diocese of Tubarão
Bishops Bishops of Criciúma (Roman rite) Paulo Antônio de Conto (27 May 1998 – 2 July 2008) Jacinto Inácio Flach (16 September 2009 – present)
Other priest of this diocese who became bishop Onécimo Alberton, appointed Bishop of Rio do Sul, Santa Catarina
References GCatholic.org Catholic Hierarchy Diocese website (Portuguese)