Oscar Beregi (born Oszkár Beregi, 24 January 1876 – 18 October 1965) was a Hungarian-Jewish^[2] actor who appeared primarily in German films.^[3]

Beregi was born in Budapest, Hungary, and was the father of actor Oscar Beregi Jr. He acted on stage in Hungary for 21 years.^[4] In April 1920, as "the only Jewish actor of prominence" acting with the Budapest National Theatre, he was the subject of a demonstration that led to the group's changing its program and presenting a play in which Beregi did not participate.^[5]

In the early 1920s, Beregi was exiled from Hungary because of his "alleged political activities".^[6] During the exile he acted in Vienna for four years.^[6] He served as president of the Film Actors' Association of Vienna.^[7] Beregi appeared in 27 films between 1916 and 1953. He played Professor Baum in Fritz Lang's film The Testament of Dr. Mabuse.^{[citation needed]} In 1926, Beregi signed a five-year contract with Universal Pictures.^[8]

Beregi died in Hollywood, California, and was buried in Budapest, Hungary.^[3]