Abstract: An interlocking hanging system including a mounting bracket which may be secured to a supporting structure, a support panel which attaches to and hangs from the mounting bracket, and one or more article holders, such as hooks or trays, which attach to and hang from the support panel. The support panel attaches to the mounting bracket, as do the article holders to the support panel, by upwardly extending arcuate hooks which pivotally corkscrew into and mate with horizontal channel structures, each with an inwardly extending lip, on the mounting bracket and support panel, respectively. The mounting bracket, support panel, and article holders are horizontal extrusions, allowing the article holders and support panel to be adjustably positioned horizontally within the support panel and mounting bracket, respectively.