The Cathedral of the Holy Saviour of Congo[1] (Portuguese: Sé Catedral de São Salvador de Congo;[2] Kongo: kulumbimbi)[3][4] was a Catholic church built at the end of the 15th century in M'banza-Kongo, the capital of the Kingdom of Kongo.

The construction as a simple church, which later would be a cathedral, was initiated between the 6th of May and the 6 of July 1491 under João I of Kongo.

By 1570, under the reign of Álvaro I, the East Jagas towns briefly took the city, burning the church, which was later rebuilt.

This same monarch tried in 1613, through Pope Paul V, that the king of Portugal took care of the cost of the maintenance of the bishops and canons of the cathedral.

The city was sacked several times during the Kongo Civil War, that followed the Battle of Mbwila of 1665, the first of them in 1668, and was abandoned in 1678, after being destroyed by the troops of the pretender to the throne Pedro III, leaving the Cathedral in ruins.