Casual Sex? is a 1988 American comedy film about two female friends in their 20s who go to a vacation resort in search of ideal men. It stars Lea Thompson, Victoria Jackson, Andrew Dice Clay, Jerry Levine, and Mary Gross. The film originated as a Groundlings musical-comedy sketch in 1985 by Wendy Goldman and Judy Toll. Ivan Reitman and his wife Geneviève Robert approached Goldman and Toll with the aim of adapting the sketch into a film. The film is Robert's sole directing effort. Reitman served as the film's executive producer.

The plot element of AIDS was incorporated in the script to address changing mores about sex in the late 1980s. A question mark was added to the film's title to acknowledge cultural anxieties surrounding casual sex during the AIDS epidemic.