The Woman on Pier 13 is a 1949 American film noir drama starring Laraine Day, Robert Ryan, and John Agar. Directed by Robert Stevenson, the picture previewed in Los Angeles and San Francisco in 1949 under the title I Married a Communist but, owing to poor polling among preview audiences, this was dropped prior to its 1950 release.

Laraine Day was an American actress, radio and television commentator, and former Metro-Goldwyn-Mayer (MGM) contract star. As a leading lady, she was paired opposite major film stars, including Robert Mitchum, Lana Turner, Cary Grant, Ronald Reagan, Kirk Douglas, and John Wayne. As well as her numerous film and television roles, she acted on stage, conducted her own radio and television shows, and wrote two books. Because of her marriage to Leo Durocher and her involvement with his baseball career, she was known as the "First Lady of Baseball". Her best-known films include Foreign Correspondent; My Son, My Son; Journey for Margaret; Mr. Lucky; The Locket; and the Dr. Kildare series.