Alexandra Hay (July 24, 1947 – October 11, 1993) was an American actress of the 1960s and 1970s best known for her roles in Guess Who's Coming to Dinner, Skidoo, and Model Shop.

On October 29, 1966, the Los Angeles Times reported "Columbia's New Talent Program has developed another young actress, Alexandra Hay, who has been signed to a long-term exclusive contract by the studio.

She was arrested on 14 nights for lewd conduct and later acquitted by the California Supreme Court on the basis that the First Amendment places strict limitations on the application of criminal laws to live theatrical performances.

Hay had television roles in episodes of CBS Playhouse; Mission: Impossible; Love, American Style; Dan August; Thriller; Kojak; The Manhunter; The Streets of San Francisco; and Police Story.

She also appeared in the television movies The F.B.I Story: The FBI Versus Alvin Karpis, Public Enemy Number One and The Screaming Woman.