A repair sleeve has first and second end portions, each of which has a substantially cylindrical outer surface. The end portions are bored to receive a cable of a particular diameter. The inner surface of each end portion may be stepped or tapered. The center portion of the repair sleeve, between the two end portions, has an interior diameter substantially larger than the nominal diameter of the cable so that the repair sleeve can be use on a frayed cable or a cable with a failing splice. The repair sleeve is split longitudinally into two interlocking portions, which, when separated, allows the damaged cable or failing splice under repair to be inserted into a first one of the portions in a radial direction. The other portion is then inserted into the first portion and the repair sleeve is swaged onto the cable.