Monetaria caputserpentis, common name the serpent's-head cowry or snakehead cowry, is a species of cowry, a sea snail, a marine gastropod mollusk in the family Cypraeidae, the cowries.

The basic color of the shell is reddish-brown, with many whitish dots on the top of the dorsum, which sometimes shows a clear longitudinal line. The underside is light beige.

This is used in making jewellery and ornaments.