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

Its colour is buff, with a pale peripheral zone underlined by an orange band.

It contains seven and a half whorls, of which two constitute the protoconch, angled at the shoulder, flattened above and rounded beneath, excavate at the base.

The rest of the shell carries stronger cords, uniform in size and evenly spaced.

The outer edge of the expanded lip is denticulate by the spiral sculpture.