Will Success Spoil Rock Hunter? is a 1957 American satirical comedy film starring Jayne Mansfield and Tony Randall, with Betsy Drake, Joan Blondell, John Williams, Henry Jones, Lili Gentle, and Mickey Hargitay, and with a cameo by Groucho Marx. The film is a satire on popular fan culture, Hollywood hype, and the advertising industry, which was profiting from commercials on the relatively new medium of television. It also takes aim at the reduction television caused to the size of movie theater audiences in the 1950s. The film was known as Oh! For a Man! in the United Kingdom.

The film was produced and directed by Frank Tashlin, who also wrote the largely original screenplay, using little more than the title and the character of Rita Marlowe from the successful Broadway play Will Success Spoil Rock Hunter? by George Axelrod. The play had run from 1955 to 1956 and also starred Jayne Mansfield as Rita.