Our Lady of the Rosary Cathedral[1] (Portuguese: Catedral Nossa Senhora do Rosário),[2] also known as Itabira Cathedral, is a Catholic cathedral located in the municipality of Itabira,[3] in the state of Minas Gerais in Brazil.

The parish of Our Lady of the Rosary of Itabira of the Mato Dentro was created on April 6, 1826.

The church, known as Matriz do Rosário, was built in the first half of the 19th century.

In 1965, with the creation of the Diocese of Itabira, the church of the Rosary became a cathedral.

On November 9, 1970, after a long period of rain, one of the cathedral's side walls collapsed and one of the towers was badly damaged.