Ratchet may refer to:

Devices

* Ratchet (device), a mechanical device that allows movement in only one direction * Ratchet, metonomic name for a socket wrench incorporating a ratcheting device *

Ratchet (instrument) A ratchet or rattle, more specifically, cog rattle is a musical instrument of the percussion family and a warning/signaling device. It operates on the principle of the ratchet device, using a gearwheel and a stiff board mounted on a handle, whi ...

, a music instrument and a warning device

Film and television

* Ratchet (Robots), 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), Ratchet (''Transformers''), a character * Ratchet, one of the Autobot Transformers * ''Ratchet'', a 1986 thriller film by John Seward Johnson III, John Johnson

Video games

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

Music

* Ratchet (song), "Ratchet" (Bloc Party song), 2013 * Ratchet (album), ''Ratchet'' (Shamir album), 2015 * Ratchet, another name for the RnBass genre

Other

* 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

Devices

Film and television

Video games

Music

Other

See also