Ratchet
Look up ratchet in Wiktionary, the free dictionary.
Ratchet may refer to:
Devices
- 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
 
Film and television
- 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
 
Video games
- Ratchet (Ratchet & Clank), a video game character
 - Ratchet: Deadlocked, a video game
 
Music
- “Ratchet (song)” Millionaires (group) featuring Kreayshawn, 2012
 - "Ratchet" (Bloc Party song), 2013
 - 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