Antiguraleus mundus is a species of sea snail, a marine gastropod mollusc in the family Mangeliidae.

They are crossed by spiral threads,4 fine and close together on the shoulder, 1 on the carina of the whorl, and 3 below it, the uppermost of these at some distance from the keel.

The outer lip is convex, thickened by an axial rib, slightly angled above, and somewhat contracted below, with a shallow broad sinus at the suture.

The columella is slightly oblique, lightly excavated towards the straight parietal wall, curved below, and extending to the left margin of the siphonal canal.

[2] This marine species occurs off North Island, off Flat Point, New Zealand, at a depth of 195 m.