Ratchet

• Ratchet (device), a mechanical device that allows movement in only one direction
• Ratchet effect in sociology and economics
• Ratchet, metonymic name for a socket wrench incorporating a ratcheting device
• Ratchet (instrument), a musical instrument and a warning device

• Ratchet (Robots), a character in the film Robots
• Ratchet, a character in the Widget the World Watcher television series
• Ratchet, a character in the Red Lantern Corps DC Comics series
• Ratchet (Transformers), a character
• Ratchet, a 1986 thriller film by John Johnson

• Ratchet (Ratchet & Clank), a video game character
• Ratchet: Deadlocked, a video game

• “Ratchet (song)” Millionaires (group) featuring Kreayshawn, 2012
• "Ratchet" (Bloc Party song), 2013
• Ratchet (Shamir album), 2015
• Ratchet, another name for the RnBass genre

• Ratchet option, a financial derivative also known as cliquet option
• Double Ratchet Algorithm, an algorithm for managing cryptographic keys
• Ratchet (slang), a derogatory term
• Ratchet Gearloose, a Disney character, paternal grandfather of Gyro Gearloose

• Nurse Ratched
• Ratched (TV series)

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