Door lock may refer to: Automotive an automobile's door lock, which may include a remote Film Door Lock (film), a 2018 South Korean film directed by Lee Kwon Household and commercial uses a deadbolt lock a door chain a locking door handle an electromagnetic lock, which holds a door shut when electricity is supplied to it a keycard lock, commonly used on hotel doors a mortise lock, a lock installed in a hollowed-out pocket within a door a rim lock, a lock fixed to the exterior of the door See also Door security Lock and key