Filodrillia lacteola is a species of sea snail, a marine gastropod mollusk in the family Borsoniidae.

The aperture is elongate-oval, opening widely into a short siphonal canal.

The outer lip is simple, thin, crenulated outside; with a deep rounded posterior sinus near the suture, having a thickened and slightly erect edge, with a shallow excavation anteriorly where it is pinched to form the canal.

The inner lip is complete, applied, glazed, thin, thickened at the back to meet the margin of the sinus.

Faint accremental striae minutely roughen the sculpture.