Witches' Brew, also known as Which Witch Is Which?, is a 1980 American comedy horror film co-written and directed by Richard Shorr, and starring Richard Benjamin, Teri Garr, and Lana Turner. It was based on Fritz Leiber Jr.'s horror-fantasy novel Conjure Wife. Herbert L. Strock directed additional sequences for the film.

Richard Samuel Benjamin is an American actor and film director. He has starred in a number of well-known films, including Goodbye, Columbus (1969), Catch-22 (1970), Portnoy's Complaint (1972), Westworld (1973), The Last of Sheila (1973), and The Sunshine Boys (1975), for which he won a Golden Globe Award for Best Supporting Actor – Motion Picture. Benjamin was nominated for an Emmy Award for Best Actor in a Comedy Series for his performances in He & She (1968), opposite his wife Paula Prentiss.