Abstract: A fish line sinker includes an elongated relatively heavy body in which there is a pair of longitudinally extending bores. One of the bores is dimensioned to slidably retain a fish line positioned therein and the other bore is dimensioned to clamp the fish line positioned therein such that it cannot move relative to the sinker body. The sinker body is slit radially so as to be separable to permit the insertion of a fish line in one of the bores, and a spring clip is provided to retain the separable body in its non-separated state. The sinker can thus be secured to the fish line without the need to cut the fish line, and the sinker can be slidably or fixedly secured to the fish line depending upon the bore selected to retain the fish line.