Smack

Smack may refer to the following:
* Smack Apparel, t-shirt company famous for creating t-shirts talking smack against its rivals "getSMACK.com"
* Simplified Mandatory Access Control Kernel, a Linux kernel security module
* Spank or slap, to strike with an open palm
* Smack (library), an open-source library for XMPP messaging
* Smack (Finnish band), a Finnish 80's rock'n roll band
* Smack (American band), an American rock'n roll band
* Honey Smacks, a cereal made by Kellogg's
* Smack (ship), a small decked or half-decked vessel, sailing under various rigs and used principally for fishing
* Smack (nightclub), a world renowned club in Leamington Spa
* Heroin, a drug often known by the street name "smack"
* Trash-talk, often referred to in the United States as "talking smack"
* Jim Rome, whose sports commentary is often referred to as "smack"
* A group of jellyfish
* "Junk" (novel), a 1996 novel by Melvin Burgess, known originally as "Junk" but published in US as "Smack"