The April Fools is a 1969 American romantic comedy film directed by Stuart Rosenberg and starring Jack Lemmon and Catherine Deneuve.

Catherine is the stunning French wife of an equally uncaring husband, Howard's philandering boss, Ted Gunther.

The female lead was originally going to be played by Shirley MacLaine, but she was not available due to commitments on Sweet Charity and campaigning for Robert F. Kennedy.

The best things in the movie, however, are the extraordinarily good supporting performances by Peter Lawford (as Miss Deneuve's husband), Jack Weston, Harvey Korman, Sally Kellerman, and by two stars who invented movie elegance almost 30 years ago, Charles Boyer and Myrna Loy.

"[17] Published slightly in advance of the film's release (as was the usual custom of the era), a paperback screenplay novelization by the tie-in scribe William Johnston was issued by Popular Library.