A structure for attaching a wire harness at a vehicle door includes: a slit formed in a door panel of the vehicle door; an introduction hole provided in the door panel so as to be connected to one end portion of the slit; a tube that covers a peripheral surface of the wire harness; and an elastically deformable clip that is fixed to the tube, wherein the clip includes a first contact portion that is configured to move via the introduction hole from a side of one surface of the door panel to a side of another surface of the door panel and contact the another surface, an insertion portion that is slidably inserted into the slit when the first contact portion contacts the another surface, a second contact portion that contacts the one surface of the door panel when the insertion portion is inserted into the slit.