A crab is a type of crustacean.

Crab or crabs may also refer to:

• Crab (unit), photometrical unit of X-ray astronomy
• Crab (cipher), an encryption algorithm based on MD5
• CRAB, an abbreviation for the symptoms of multiple myeloma
• "Crabs", a colloquial term for Pediculosis pubis

• Crab canon, a musical form
• Crab Records, a defunct record label
• Crab (scratch), a DJ technique
• "Crab", a song from the album Weezer (Green Album) by Weezer

• The Crab, an outdoor 1962 painted steel sculpture by Alexander Calder
• Crab, a character from the animated children's television series WordWorld
• "Krabi" (short film), aka The Crabs, a 1976 Czech animated film

• Crab (horse) (1722–1750), a British Thoroughbred racehorse
• Basket Rimini Crabs, an Italian professional basketball team based in Rimini, Emilia-Romagna
• Crab (posture) used in gymnastics, breakdancing, yoga
• Crab or catch a crab, a rowing error
• Crab, an athletic move akin to the float in breakdancing

• Crab landing, a landing maneuver
• Crab, Virginia, an unincorporated community
• Sherman Crab, a British World War II mine-clearing tank
• Panhard CRAB, a French armoured combat vehicle
• Roger Crab (1621–1680), English soldier, haberdasher, herbal doctor and writer
• Crab Nebula

• All pages with titles containing Crab
• Krab (disambiguation)
• Cancer (disambiguation)
• Crabb, surname