Nicolaus Bogantius (also spelled Beganicio; Hungarian: Bogantius Miklós; Croatian: Nikola Bogantius; died 1551) was a Hungarian prelate of the Catholic Church who served as an auxiliary bishop in the Diocese of Transylvania and a titular bishop of Duvno from 1536 to his death in 1551. He spent most of his tenure in Rome as a representative of John Zápolya, the contested king of Hungary and an Ottoman subject.