The Roman Catholic Diocese of Nova Iguaçu () is a diocese located in the city of Nova Iguaçu in the ecclesiastical province of São Sebastião do Rio de Janeiro in Brazil.
History 26 March 1960: Established as Diocese of Nova Iguaçu from the Diocese of Campos, Diocese of Niterói and Diocese of Valença
Bishops Bishops of Nova Iguaçu (Roman rite), in reverse chronological order Bishop Gilson Andrade da Silva (2019.05.15 - present) Bishop Luciano Bergamin, C.R.L. (2002.07.24 – 2019.05.15) Bishop Werner Franz Siebenbrock, S.V.D. (1994.11.09 – 2001.12.19), appointed Bishop of Governador Valadares, Minas Gerais Bishop Adriano Mandarino Hypólito, O.F.M. (1966.08.29 – 1994.11.09) Bishop Honorato Piazera, S.C.I. (1961.12.14 – 1966.02.12), appointed Coadjutor Bishop of Lages, Santa Catarina Bishop Walmor Battú Wichrowski (1960.04.23 – 1961.05.31)
Coadjutor bishop Gilson Andrade da Silva (2018-2019)
References GCatholic.org Catholic Hierarchy Diocese website (Portuguese)