Isle of Forgotten Sins is an American South Seas adventure film released on August 15, 1943 by PRC, with Leon Fromkess in charge of production, directed by Edgar G. Ulmer and featuring top-billed John Carradine and Gale Sondergaard whose performance in one of 1936's Academy Award for Best Picture nominees, Anthony Adverse, earned her the first Academy Award for Best Supporting Actress.