Alfredo Oscar Saint-Jean (11 November 1926 – 2 September 1987) was an Argentine Army major general and politician. He served as President of Argentina in 1982.
Having been appointed Interior Minister in 1981 by Leopoldo Galtieri, he briefly served as President of Argentina from 18 June 1982 to 1 July 1982, during a period of military rule.
Saint-Jean's brief period as President in June and July 1982 ended when he was succeeded by General Reynaldo Bignone.
