Abstract: This invention discloses a pivoting bar lock which has a locking bar guide slidably attached to a locking bar. The locking bar is pivotally attached to a mount or base plate which is affixed to a door jambb. The locking bar guide can be inserted into or slid through a mount or other means of a door mount retainer assembly mounted on a door. The door can thus be locked in a fully closed position or allowed to be partially opened while remaining securely locked. The locking bar can be used to apply leverage to close the door against the force of an intruder.