Dom Thomas de Castro (c.1621-1684) was a native of Divar in Goa, Portuguese India. The Holy See appointed him Vicar Apostolic of Canara on 30 August 1675. He later founded the famous Milagres Church in Mangalore, South Canara, Karnataka. He was the nephew of Dom Matheus de Castro (c.1594−1677), the first Indian Bishop of The Catholic Church.