Margo Channing was the lead character in the highly-acclaimed 1950 film "All About Eve". In the film, she was portrayed by Bette Davis, who was nominated for an Academy Award for Best Actress. In the 1970 Broadway musical version "Applause", the character was portrayed by Lauren Bacall, who won a Tony Award for the role.
Margo has a literary namesake in Margo Lane, the love interest of radio, comic book, and pulp magazine detective hero The Shadow ("The Shadow Knows!").