The invention provides a wedge clamp which is for fastening the end of a steel wire and has improved workability during use. The wedge clamp (1) for holding a steel wire is provided with a first member (12) having a wedge shape, and a second member (11) that is fitted together with the first member (12) by sliding the first member, thereby restricting the steel wire by means of pressure generatedby the wedge shape of the first member (12). The wedge clamp is also provided with locking parts (protrusions (124) and anchoring parts (113)) which cause the first member (12) and the second member (11) to engage while enabling the sliding fitting of the first member (12) and the second member (11) one another.