Abstract: A locking accessory bracket for use with an accessory standard. A locking accessory bracket that may be used with an accessory standard that essentially comprises a flat, straight elongated body portion having a multiplicity of identical, spatially positioned, upwardly projecting, L-shaped hook members located on either side thereof. The locking accessory bracket comprises a flat mounting plate and a hook plate made integral therewith. The hook plate has a plurality of identical, spatially positioned, downwardly projecting, L-shaped hook members, for detachable engagement with desired ones of the multiplicity of upwardly projecting hook members of the accessory standard. The improvement comprises a locking member that is rotatably mounted at a topmost portion of the hook plate.