Rock may refer to:

• In geology and common usage, rock is a solid substance composed of minerals, of which can consist in particulate form (dirt) or in large form (mountains, tectonic plates, planetary cores, planets):
• Rock and roll, a genre of popular music, which developed in 1950s and '60s, from which all rock music evolved
• Rock music, a general genre of styles of popular music evolved from rock and roll
• Rock salt is a common term for Halite, an unrefined form of sodium chloride
• Slang for an islet, usually a small island
• Slang for a gemstone, usually understood to be a diamond
• Slang for cocaine or its variants.

People

• Chris Rock, (1965–), American comedian
• Joseph Rock, (1884–1962), Austrian-American explorer, geographer and botanist
• Andrew Rock, (1982–), United States athlete
• Rock (rapper), half of the Hip Hop duo Heltah Skeltah.
• The Rock (entertainer), Dwayne Johnson, a professional wrestler and actor

Places

• Rock, Rock County, Wisconsin, USA
• Rock, Wood County, Wisconsin, USA
• Rock, Kansas, USA
• Rock, Cornwall, UK
• Rock, Worcestershire, UK
• Rock River (disambiguation)
• Gibraltar, nicknamed "The Rock"
• Alcatraz Island, slang name for the federal prison in San Francisco Bay
• Chicago, Rock Island & Pacific Railroad, nicknamed "The Rock"