The Cabildo of Buenos Aires () is the public building in Buenos Aires that was used as a seat of the town council during the colonial era and the government house of the Viceroyalty of the Río de la Plata.
The Cabildo of Buenos Aires () is the historical building that served as both the seat of the local government and the official residence for the Viceroyalty of the Río de la Plata in Buenos Aires during the colonial era.