Marianna Hill (née Schwarzkopf, February 9, 1942) is a retired American actress. She predominantly worked in American television and is known for her starring roles in the Western films El Condor and High Plains Drifter and the cult horror film Messiah of Evil (both 1973), as well as many roles on television series in the 1960s and '70s. She was sometimes credited as Mariana Hill. She appeared in one episode of Hogan's Heroes, The Gasoline War, as Louisa.