Abstract: An adapter for use with a cable hanger which includes a U-shaped member having a center portion with legs securing a cable and securable to a structure. The adapter includes (1) a center platform defining an opening therein adapted to receive the legs of another cable hanger, (2) a pair of clamping members on opposite ends of the platform with feet spaced from the center platform and directed toward each other, and (3) legs on opposite sides of the platform and adapted to engage the cable hanger whereby the feet are held against the cable hanger center portion when mounted thereon. The clamping member feet are spaced apart less than the length of a cable hanger center portion, and the clamping members are elastically flexible to allow the feet to be separated sufficiently to clear opposite ends of a cable hanger center portion when mounting on the cable hanger.