A mullet is a hairstyle worn by both men and women that is short on the front, sides, and top and long in the back. While the mullet was fashionable in the 1970s and 1980s, and remains popular in certain circles today, it became an object of derision in American youth culture in the 1990s. The origin of the term mullet is unclear, but the Beastie Boys popularized it in their 1994 anti-mullet song "Mullet Head" and a related article in their magazine.

In the 1970s, the mullet was associated with pop-culture icons including glam rocker David Bowie and television star Florence Henderson of the Brady Bunch. Popular musicians and actors continued to sport the mullet throughout the 1980s, as the hairstyle became ever bigger and more flamboyant. However, as the decade waned, the mullet became increasingly associated with balding has-beens looking back to an earlier decade of glory. The Beastie Boys spearheaded the revolt of youth culture against the mullet and the values of previous decades that it symbolized.

The mullet became somewhat of a joke after the Beastie Boys song, parodied in punk and hip hop songs, coffee table books, and websites. Mullet-wearers became stereotyped as ignorant, unfashionable, and generally out of touch with the modern world. Nevertheless, the mullet remained popular and fashionable among certain blue collar and youth populations throughout America and Europe. While members of the punk scene ridiculed the mullet, country and heavy metal fans embraced the style. The mullet has also remained popular for players and fans of certain professional sports, including American football, hockey, and soccer.

More recently, the mullet has seen a resurgence of popularity among the young and hip, as its heyday is now far enough removed for the look to be considered retro. Jade Puget, the guitarist of post-punk band AFI, wears a mullet-inspired hairdo, as do many members of the emo scene.