Smack(s) may refer to:

• Slapping (strike), a broad stroke made with the open hand
• Spanking, a form of corporal punishment
• slang term for Heroin, a narcotic drug
• Smack (ship), a small decked or half-decked vessel
• Smack talk, the use of threatening or intentionally inflammatory language
• A collective noun for a group of jellyfish
• An onomatopoetic word for a kiss
• Honey Smacks, a breakfast cereal sometimes marketed simply as Smacks

• Smack (software), a Linux kernel mandatory access control mechanism

• Smack (American band), a 2000s pop/rock band
• Smack (Finnish band), a 1980s rock band
• Smack (Brazilian band), a 1980s post-punk band
• Smack (novel) or Junk, a 1996 novel by Melvin Burgess
• "Smack", a song by Zion I and The Grouch, a B-side of the single "Lift Me Up"

• All pages with titles beginning with Smack
• Trash-talk