Francis Nguyễn Trọng Trí, penname Hàn Mặc Tử (September 22, 1912 – November 11, 1940), was a Vietnamese poet. He was the most celebrated Vietnamese Catholic literary figure during the colonial era. He was born Nguyễn Trọng Trí, at Lệ Mỹ Village, Đồng Hới District, Quảng Bình Province. His pen names included Minh Duệ, Phong Trần, Lệ Thanh, and finally Hàn Mặc Tử, by which name is known today. He grew up in a poor family, his father having died when he was young. He showed poetic talent at a young age. When he met Phan Bội Châu, he received encouragement and praise that made him well known. He contracted leprosy in 1937, and was finally hospitalized at Quy Hòa Hospital in September 1940, where he died two months later.