Marianna Hill (born Marianna Schwarzkopf; February 9, 1942) is an American actress who is known for her starring roles in the Western films El Condor (1970) 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 1970s.

[2] Her father, a building contractor, worked in several countries, which resulted in Hill's education in California, Spain, and Canada.

[4] Hill guest-starred in several 1960s sitcoms, including My Three Sons, Hogan's Heroes and Love, American Style, as well as in the original Star Trek series ("Dagger of the Mind", 1966, as Dr. Helen Noel) and Perry Mason ("The Case of the Greek Goddess", 1963, as Theba).

; Kung Fu; The Outer Limits; Hawaii Five-O, Mannix; Batman; Daniel Boone; The Tall Man; Mission: Impossible; and the first pilot movie for Harry O.

[6][7] In a rare public appearance, Hill attended the premier of the movie at the 2016 Fort Lauderdale Film Festival.