Abstract: A wire holder having an attaching base of molded flexible material to define a suction cup for secure mounting to a surface and a wire mount formed integrally with the attaching base and having a pair of perpendicular slits for each releasably retaining a length of wire. The slits extend to different depths whereby two wire lengths mounted in the slits do not interfere with each other. The slits are of a width less than the wire and each have a generally circular recess at the base thereof whereby a wire is inserted by slight deformation of the wire mount and, thereafter, with the wire length in the generally circular recess the wire is retained in position by the closed slit. The wire holder facilitates mounting of wires, such as Christmas light wiring, to nonporous, slippery surfaces, such as a window, whereby the desired ornamental appearance may be achieved.