A garment hanger management device provides convenient, secure, and organized storage for garment hangers, including garment hangers having various sizes of hook portions, such as for use in a retail clothing environment. The device includes locking mechanisms with movable pins or mounting members that support a retainer element in spaced arrangement relative to a hanger support rod on which the garment hangers are hung. The pins and retainer element are positionable between a fully open configuration and a fully closed configuration, or substantially any position in between the fully opened or closed configurations, and are lockable or fixable in a desired configuration by a locking tab that is capable of engaging the pins substantially anywhere within a region along the length of the pins.