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

The shell contains six whorls, inclusive of a two-whorled protoconch, rather inflated, sharply angled at the shoulder.

;Bbelow the shoulder angle thirteen spaced cords become progressively smaller and closer towards the end of the shell, four of these ascending to the penultimate and two to the uppermost whorl.

The faint curved radial dashes start below the shoulder angle and vanish on the base.

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