The Territorial Prelature of Itacoatiara () is a Latin Church territorial prelature of the Catholic Church in Amazonas state, inland northern Brazil. It is a suffragan in the ecclesiastical province of the metropolitan Archdiocese of Manaus.
Its cathedral is the Catedral PrelatÃÂcia Nossa Senhora do Rosário, dedicated to Our Lady of the Rosary, in the episcopal see of Itacoatiara, Amazonas.
As per 2014, it pastorally served 137,400 Catholics (79.1% of 173,800 total) on 58,424 km<sup>2</sup> in 13 parishes with 14 priests (8 diocesan, 6 religious), 12 lay religious (6 brothers, 6 sisters) and 2 seminarians.
(all Roman rite)