There is a rumour that this film is the only time Rita Hayworth's real singing voice is heard, but that is not true. According to the bonus features from the DVD, Hayworth actually never recorded her own singing voice and was a talented lip-syncher. Anita Ellis dubbed almost all of her singing in this film. Hayworth always wanted to do her own singing, and Columbia Pictures chief Harry Cohn paid for her voice lessons, but she never developed a voice he considered strong enough to be used; Hayworth remained bitter about that for the rest of her life.
Rita Hayworth wore a corset whilst shooting "Put the Blame on Mame", as she had given birth to her first daughter, Rebecca Welles, months before filming.
Remarking on her varied success at dating, Rita Hayworth once stated: "They fell in love with Gilda and woke up with me."
Humphrey Bogart declined the role of Johnny Farrell in what was to become a classic film noir and huge box-office hit. He reasoned that, with gorgeous Rita Hayworth playing Gilda, audiences wouldn't look at anyone else.
Gilda was an inspiration for the character of Jessica Rabbit in Chi ha incastrato Roger Rabbit (1988).