Under Lock and Key is the third studio album by American heavy metal band Dokken, released on November 22, 1985, through Elektra Records. The album reached No. 32 on the U.S. Billboard 200 and remained on that chart for 67 weeks. Two singles also charted: "The Hunter" and "In My Dreams", both reaching No. 25 and 24 on Billboard's Mainstream Rock respectively, with "In My Dreams" at No. 77 on the Billboard Hot 100. Under Lock and Key was certified Gold on March 4, 1986, and Platinum on April 14, 1987.

Dokken is an American heavy metal band formed in Los Angeles in 1978. It split up in 1989 and reformed four years later. The band has had several hit singles which charted on the Billboard Hot 100, such as "Alone Again", "In My Dreams", and "Burning Like a Flame", and has sold more than 10 million albums worldwide. The live album Beast from the East was nominated for the inaugural Grammy Award for Best Metal Performance in 1989.