Inquisitor dampieria is a species of sea snail, a marine gastropod mollusk in the family Pseudomelatomidae.

(Original description) The slender long, and solid shell has a lanceolate shape.

The fasciole is a broad and rather deeply sunken furrow, crossed by fine concentric growth lines, and traversed by a median sulcus.

Between the fasciole and the anterior end are twenty-two spiral grooves, which grow wider and deeper towards the base, and smaller and more crowded on the snout.

The radial ribs are seventeen to a whorl, prominent on the shoulder, and gradually vanishing towards the base, higher on the penultimate, and decreasing towards the aperture.