Anguloclavus multicostatus is a species of sea snail, a marine gastropod mollusk in the family Horaiclavidae.

The shell is thin, smooth, shining, yellowish-white with red-brown blotches in three more or less interrupted bands.

The sculpture consists of numerous, sharp axial ribs, 16 in number on the body whorl, with pointed tubercles at the angle, connected by a rather faint spiral..Moreover, there are very faint growth lines and spiral striae, more conspicuous on the base of the body whorl, especially on the ribs, and a few stronger ones on the siphonal canal.

The columellar margin is concave above, directed to the left below along the siphonal canal, with a thin layer of enamel.

[2] This marine species occurs in the Mozambique Channel and off Madagascar; also off Indonesia, New Caledonia, Papua New Guinea and in the Bismarck Sea.