| Jurisdiction: | Territorial Prelature |
| Itacoatiara | |
| Latin: | Praelatura Territorialis Itacoatiarensis |
| Country: |  Brazil |
| Denomination: | Catholic Church |
| Sui Iuris Church: | Latin Church |
| Rite: | Roman Rite |
| Established: | 13 July 1963 (years ago) |
| Cathedral: | Catedral Prelatícia Nossa Senhora do Rosário |
| Area Km2: | 83,012 |
| Population: | 155,254 |
| Population As Of: | 2004 |
| Catholics: | 126,726 |
| Catholics Percent: | 81.6 |
| Metro Archbishop: | Sérgio Eduardo Castriani, C.S.Sp. |
| Bishop: | José Ionilton Lisboa de Oliveira, S.D.V. |
| Bishop Title: | Prelate |
The Territorial Prelature of Itacoatiara (la|Praelatura Territorialis Itacoatiarensis) 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 Prelatícia 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 km2 in 13 parishes with 14 priests (8 diocesan, 6 religious), 12 lay religious (6 brothers, 6 sisters) and 2 seminarians.
(all Roman rite)