CLAMP FOR WIRE HARNESS

A clamp attached to a wire harness is attached to a section of a vehicle body where a clamp hole cannot be formed in the vehicle body. The clamp is constituted by a band clamp that wraps a band around the wire harness, a base plate-type clamp that uses a piece of pressure-sensitive adhesive tape, or a corrugated clamp to be attached to a corrugated tube in which a wire harness is inserted. The clamp includes a wire harness attachment portion constituted by a band and a band locking box of the band clamp, a base plate of the base plate-type clamp, or an externally fitted portion of the corrugated clamp; and a suction cup protruding from the wire harness attachment portion, wherein the clamp has a structure in which the suction cup is pressed against and spread out on a vehicle body surface for suction thereto.