To obtain an anchor clamp where inadvertent falling of a clamp body or a wedge member is prevented during work.

The wire anchor clamp comprises a clamp body 1 having a clamp groove 5, and a wedge member 2 having a wedge part 8 for clamping a wire in the clamp groove 5 and an anchor part 10 to be coupled with a hanger rod holder 3. A lateral locking hole 11, into which a hunchback pin 12 can be inserted, is made in the thin part of the wedge member 2 facing the end face of the clamp body 1 and the hunchback pin 12 is inserted into the locking hole 11 thus preventing the clamp body 1 and the wedge member 2 from being dismantled.