Judy Holliday (June 21, 1921 – June 7, 1965) was an American actress.

Holliday began her career as part of a night-club act, before working in Broadway (Broadway theatre) plays and musicals. Her success in the 1946 stage production of Born Yesterday as "Billie Dawn" led to her being cast in the 1950 film version, for which she won the Academy Award for Best Actress and the Golden Globe Award for Best Actress - Motion Picture Musical or Comedy. She appeared regularly in film during the 1950s. She was noted for her performance on Broadway in the musical Bells Are Ringing, winning a Tony Award for Best Performance by a Leading Actress in a Musical and reprising her role in the 1960 film.

In 1952, Holliday was called to testify before the Senate Internal Security Subcommittee to answer claims that she was associated with communism. Although not blacklisted (blacklisting) from films, she was blacklisted from radio and television for almost three years.