- The character of "Lina Lamont" in the 1952 film Singin' in the Rain was written by Betty Comden and Adolph Green with their friend Judy Holliday mind. However a variety of circumstances prevented her from doing the film. Instead Jean Hagen, who had made her debut in the 1949 film Adam's Rib along side of Holliday, was cast.
- Among those who list Judy Holliday as one of their favorite actresses are Madonna, Catherine Deneuve, Winona Ryder, Pamela Anderson, Cathy Moriarty, Mia Farrow, Shirley MacLaine, Kristen Miller, Arte Johnson and Woody Allen.
- One of Judy Holliday's best friends in high school was Patricia Highsmith. Highsmith would go on to become a celebrated author of suspense novels like Strangers on a Train and The Talented Mr. Ripley.
- Judy Holliday was the first actress to ever be simultaneously nominated for Golden Globe Awards in both the "Actress in a Leading Role - Musical or Comedy" and the "Actress in a Leading Role - Drama" categories. Stranger still was the fact that both nominations were for the same film, Born Yesterday.
Judy Holliday won both the Golden Globe Award for "Actress in a Leading Role - Musical or Comedy" and the "Best Actress" Academy Award in the same year for Born Yesterday.
- Judy Holliday was the first actress to ever be nominated for Golden Globe Awards in both the lead (Born Yesterday) and supporting (Adam's Rib) actress categories in the same year.