Locking may refer to:
- Locking (computer science)
- Locking, Somerset, a village and civil parish in the United Kingdom
- RAF Locking, a former Royal Air Force base
- Locking Castle, a former castle
- Brian Locking (born 1938), rock guitarist
- Norm Locking (1911–1995), National Hockey League player
- Locking (dance), a style of funk dance invented in the early 1970s
- Prevention of a screw thread from turning when undesired