In Heat

In Heat may refer to:


 * Estrous cycle in animals (usually referred to as "in heat")
 * In Heat (Love Unlimited album) (1974)
 * In Heat (The Romantics album) (1983)
 * In Heat (Black 'N Blue album) (1988)
 * In Heat (Fuzztones album), 1989
 * "In Heat" (Criminal Minds), an episode of the U.S. TV series Criminal Minds
 * "In Heat", an episode of Broad City