Sieghardt Rupp (June 14, 1931 in Bregenz, Vorarlberg, Austria) is an Austrian actor who has performed in film and television and later theatre.
He has made over 55 film and TV appearances since 1959 but his career was at its peak in the 1960s. He became known for his performances in gangster or western films in the 1960s where he typically portrayed a bandit or mercenary. His dark features, similar to those of his Italian co-stars meant that he could play Latin characters, such as Mexicans.
His most noted western performance was his role as Esteban Rojo in Sergio Leone's 1964 production A Fistful of Dollars alongside Clint Eastwood and Gian Maria Volonte. He appeared in many other westerns in the 1960s such as Blood at Sundown (1966) although he appeared in the romantic adventure Angelique and the Sultan in 1968.
After 1970 his film career diminished. However he made several TV appearances afterwards, notably in Tatort as Investigator Kressin between 1971 and 1973 and he made an appearance in the long running police series SOKO 5113 in 1990.
From 1985 he performed at the Theater in der Josefstadt in Vienna on stage.
He retired from film and television acting in 1995.