Roman Catholic Diocese of Oeiras
The Roman Catholic Diocese of Oeiras () is a Latin suffragan diocese in the Ecclesiastical province of Teresina in northeastern Brazil. Its cathedral episcopal see is Catedral Nossa Senhora da Vitória, dedicated to Our Lady of Victory, in the city of Oeiras in the Brazilian state of Piauí. Statistics. As per 2014, it pastorally served 125,000 Catholics (89.2% of 140,200 total) on 15,096 km² in 20 parishes with 20 priests (19 diocesan, 1 religious), 17 lay religious (1 brother, 16 sisters) and 6 seminarians.