Abstract: A wire connector comprising an outer socket and an inner socket, both of which being tubular shaped and formed of insulating material and adapted to be inserted one into the other. The inner socket has a split extending longitudinally along its full length. A double ended needle is prelaid in the center of the inner socket by being retained in a partition wall therein. The wire ends to be connected are inserted into opening of the inner socket, so that the needle ends penetrate into the cores of the wire ends. The outer socket serves to tighten the inner socket to obtain a positive gripping of the wire ends. A U-shaped spike is provided through the side wall of the inner socket, with two points thereof penetrating the coating of the wires to enhance the connecting effect.