The Roman Catholic Archdiocese of Brazzaville (Latin: Archidioecesis Brazzapolitana) is the Metropolitan See for the ecclesiastical province of Brazzaville in the Republic of the Congo.

On 4 June 1886, Pope Leo XIII established the Apostolic Vicariate of French Congo from the Diocese of São Paulo de Loanda in Angola and the Apostolic Vicariate of Two Guineas in Gabon.

It lost territory in 1950 when the Apostolic Vicariate of Fort-Rousset was established.

Pope Pius XII promoted the vicariate to the Metropolitan Archdiocese of Brazzaville on 14 September 1955.

The seat of the archbishop is the Cathédrale Sacré-Coeur in Brazzaville, founded in 1887 by Monseigneur Augouard.