Caroline O'Connor is an Australian actress and singer. She has released the albums A Tribute to Piaf and What I Did for Love. O'Connor also appeared on the 1993 Leicester Haymarket Theatre Cast recording of West Side Story with Leonard Bernstein and Stephen Sondheim. She has collaborated on several popular songs, including Land of Yesterday with the Anastasia Company, Sparkling Diamonds with Nicole Kidman and Natalie Mendoza, and The Press Conference with John Bolton and the Anastasia Company. O'Connor has appeared in the films Moulin Rouge! with Nicole Kidman and Ewan McGregor, De-Lovely, and Carlotta.