- lockSomething used for fastening, which can only be opened with a key or combination.
- LockwoodA civil parish in Redcar and Cleveland district, North Yorkshire, England.
- locketA pendant that opens to reveal a space used for storing a photograph or other small item.
- lustedA surname from Old English.
- LockeridgeA village in West Overton parish, Wiltshire, England (OS grid ref SU148678).