Caius of Korea (1571 in Korea – 15 November 1624 in Nagasaki, Japan) is the 128th of the 205 Catholic Martyrs of Japan beatified by Pope Pius IX on 7 July 1867, after he had canonized the Twenty-six Martyrs of Japan five years before on 8 June 1862. The 19th century French Catholic missionary Claude-Charles Dallet wrote of him in his A history of the church in Korea, "His history proves, in a dazzling way, that God would rather make a miracle than abandon an infidel who follows the lights of his conscience, and seeks the truth with an upright and docile heart."