Felix de Andreis (May 1, 1778– October 15, 1820) was the first superior of the Congregation of the Mission (Lazarists) in the United States and Vicar-General of upper Louisiana in St. Louis. Andreis was born in northern Italy. His early theology teaching career was at the College of the Propaganda in Rome, a school that trained priests for mission work. Louis Dubourg recruited Andres in 1815 to work in the Missouri Territory. He arrived in St. Louis in 1817. Appointed Vicar-General by Dubourg, Andreis also directed several educational and spiritual endeavors, including acting as spiritual director of Rose Philippine Duchesne.