A locked-room mystery is a type of crime featured in detective fiction.
Locked room may also refer to: The Locked Room, a 1972 mystery novel The Locked Room (1986), the third part of The New York Trilogy series of novels "The Locked Room" (Patience), a 2025 television episode "The Locked Room" (True Detective), a 2014 television episode Locked Rooms, a 2005 book by Laurie R. King