Datu Magat Salamat was a Filipino historical figure best known for co-organizing the Tondo Conspiracy of 1587. He was one of at least four sons of Lakandula, and thus held the title of Datu under his cousin and co-conspirator Agustin de Legazpi, who had been proclaimed paramount ruler (ruler over other datus) of the indianized kingdom of Tondo after the death of Lakandula, although the position soon became little more than a courtesy title.