Inodrillia nucleata is a species of sea snail, a marine gastropod mollusk in the family Horaiclavidae.

The white, protoconch is disproportionately large, smooth at first, shining, very obtuse.

The second whorl shows about fifteen rather sharp transverse ridges parallel with the axis, and not flexuous.

A few microscopic revolving striae are perceptible in some places, especially on the surface of the rather broad notch-band.

The siphonal canal is short, wide, slightly reflected, showing on the columella a distinct fasciole.