Lock and Key

A lock and key is a pair of devices used to secure an object or location from unauthorized access.

Lock and Key or Lock & Key may also refer to:

Film

 * Taala Te Kunjee (Lock and Key), a 2017 Indian Punjabi-language film

Literature

 * Lock and Key (novel), a 2008 novel by Sarah Dessen
 * Lock and Key, a book series by Ridley Pearson

Albums and EPs

 * Lock & Key (album), a 2014 album by Cruel Hand
 * Lock & Key, an EP by Wild Adriatic

Songs

 * "Lock and Key" (Klymaxx song)
 * "Lock and Key" (Rush song)
 * "Lock and Key", a song by Nina Sky
 * "Lock and Key", song by SNAFU from the album Situation Normal

Science

 * Lock and key model, a model for the specificity of enzymes and other of biomolecules
 * Memory protection, a computer memory protection technique