A Question of Adultery (U.S. title: The Case of Mrs. Loring) is a 1958 British drama film directed by Don Chaffey and starring Julie London and Anthony Steel. The film was reportedly based on the 1948 play A Breach of Marriage by Dan Sutherland. A novelisation of the film was written by Gordon Wellesley. The controversial nature of the film led to it being given an X rating in the UK and rated "Condemned" by the US Roman Catholic Legion of Decency, leading to the film being delayed for release in the United States.