The Roman Catholic Diocese of Sinop () is a diocese located in the city of Sinop in the ecclesiastical province of Cuiabá in Brazil.

History February 6, 1982: Established as Diocese of Sinop from the Diocese of Diamantino

Bishops Bishops of Sinop (Roman rite), in reverse chronological order Bishop Canisio Klaus (2016.01.20 - Present) Bishop Gentil Delázari (1995.03.22 – 2016.01.20) Bishop Henrique Froehlich, S.J. (1982.03.25 – 1995.03.22)

Coadjutor bishop Gentil Delázari (1994-1995)

References GCatholic.org Catholic Hierarchy