Mitromorpha axicostata is a species of sea snail, a marine gastropod mollusk in the family Mitromorphidae.

The outer lip is thin, simple, convex in profile, with a shallow, wide depression just belowi the ascending suture.

The columella is long, nearly straight, slightly prominent at the junction with a concave base of the body whorl.

The sculpture sconsists of oblique rounded axial ribs, as wide as the interspaces, absent from the base, and vanishing towards the aperture.

The spiral lirae are flatly convex, wider than their spaces, cross the ribs, nine in the penultimate, twenty-five in the body whorl.