A wire gripper having a gripping mechanism capable of gripping two wires at a desirable position thereof for suspending a heavy article without a rotation of the article around an axis of each wire is provided. The wire gripper (1) has an inner sleeve (10) and an outer sleeve (40). The inner sleeve (10) is formed with two wire-insertion bores (11) and two pairs of ball-set bores (21), each bore open at both the wire-insertion bores and an outer surface of the inner sleeve. And, the inner sleeve (10) has a tapered outer surface formed at a portion where the ball-set bores are formed. A spring 60 biases the inner sleeve (10) so that the tapered outer surface of the inner sleeve (10) contacts the tapered inner surface (41a) of the outer sleeve (40). Large-diameter balls (31) and small-diameter balls (31) are received in the ball-set bores (21) and protrude partially into the wire-insertion bores (11) so as to press the wire with three balls in the four balls.