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

On the shoulder a sharp angle is defined by a prominent cord, above which six fine and closely packed threads occupy the fasciole area.

The sinus shows a large U-shaped spout, below which is an incipient varix.

The inner lip shows a sheet of callus, thin above, but with a thickened margin below.

[2] This marine species is endemic to Australia and occurs off New South Wales.