Sieghardt Rupp (14 June 1931 – 20 July 2015) was an Austrian actor who performed in film, television and theatre.

He made over 55 film and TV appearances beginning in 1959, with his career peaking 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.