Rock may refer to:

• Rock, a geologic substance composed of minerals
• Rock, short for Rock and Roll music
• Rock, a small offshore islet with minimal soil
• Rock, a confectionery made and sold in many of the UK's seaside holiday resorts
• Rock candy, a type of confectionery composed of large sugar crystals
• Rock, a slang term for a jewel, usually understood to be a diamond
• Rock, a slang term for the drug cocaine
• ROCK, a Linux distribution build kit
• Rock, the main character of the main Mega Man series before his transformation into "Mega Man".
• Rock, a dark young boy who is a recurrent character of Osamu Tezuka's mangas.
• Rocks, an album by Aerosmith

People named Rock include:

• Chris Rock, (1965-), African-American comedian
• Joseph Rock (1884-1962), Austrian-American explorer, geographer and botanist

The Rock may refer to:

• The Rock, slang for Newfoundland, Canada
• The Rock, slang for Alcatraz, a federal prison in San Francisco Bay
• The Rock, a 1996 motion picture about the prison
• The Rock, a nickname for Gibraltar
• The Rock, a professional wrestler and actor
• The Rock, nickname of The Chicago, Rock Island & Pacific Railroad

Rock may also refer to:

• Rock, Wisconsin
  • Rock, Rock County, Wisconsin
  • Rock, Wood County, Wisconsin
• Ayers Rock or Uluru, Australia
• Rock, Cornwall