Parish Church of Our Lady of the Conception of António Dias, Colonial church in Ouro Preto, Brazil.

The Parish Church of Our Lady of the Conception of António Dias stands between Praça Barão de Queluz and Praça Antônio Dias in Ouro Preto. Its plan, begun in 1727 under master builder Manuel Francisco Lisboa, consists of two solid rectangles with chamfered corners enclosing the chancel, side corridors, a transverse sacristy and a consistory. Nave and chancel have side ambulatories with tribunes above, and a choir sits over the entrance.

A chapel raised by the bandeirante Antônio Dias around 1699 became a parish church in 1705; by 1724 it was in ruins and the brotherhoods asked the council for a new building. Construction began in 1727 under master builder Manuel Francisco Lisboa, father of Aleijadinho; both are buried here. The choir carvings were started in 1756 and finished around 1770, with painting and gilding completed in 1772. The churchyard was built between 1860 and 1863.

The interior displays works by Aleijadinho, the renowned local sculptor, showing how colonial artisans expressed their religious devotion through carved wooden details and altar decorations. The space reflects how European styles were adapted using Brazilian materials and local craft traditions.

The building serves both as an active place of worship and a museum with set visiting hours. Visitors should note that religious services may affect access and appropriate clothing is expected when entering.

In 2005 the Archdiocese of Mariana granted the church the title of Archdiocesan Sanctuary, at the request of parish priest Canon Luiz Carlos César Ferreira Carneiro, under Archbishop Dom Luciano Pedro Mendes de Almeida. The Aleijadinho Museum, set up in 1968 in spaces of the church, keeps four busts of Doctors of the Mendicant Orders and four lions carved by Aleijadinho.