Dominic Mary Hồ Ngọc Cẩn (1876- 1948) was the 1st Vietnamese Bishop of the Bui Chu Dioceseand the 2nd Vietnamese Bishop of the Vietnamese Catholic Church. In addition, he was a moral and cultural educator and a religious leader of Vietnam in the first half of the 20th century. Dominic Mary Hồ Ngọc Cẩn was the founder of the Congregation of The Daughters of Our Lady of The Holy Rosary in Vietnam.