Abstract: A stackable cable spacer for spacing adjacent cables a predetermined variable distance apart is secured between the cables by a cable tie reeved around the cables. The spacer includes a body member having a cable tie receiving means for accepting and locating the cable tie; a first mating portion secured to the body member; and a second mating portion secured to the body member, the second mating portion being adapted to matingly receive the first mating portion of a second spacer allowing said spacer to be used individually or with other spacers in a mating contiguous relationship to provide selectable spacing of adjacent cables.