Oscilla ligata is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies.
The rather thin shell has a rosy-white color and measures 2 mm. The six whorls of the teleoconch have prominent spiral ribs. The outer lip is simple. The columella has a small transverse plait.[1]
This marine species occurs off New South Wales, Australia.