Oscilla ligata is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies.

[1] The rather thin shell has a rosy-white color and measures 2 mm.

The six whorls of the teleoconch have prominent spiral ribs.

The columella has a small transverse plait.

[2] This marine species occurs off New South Wales, Australia.