Diala sulcifera is a species of sea snail, a marine gastropod mollusk in the family Dialidae.
The shell size varies between 1.9 mm and 4.5 mm.
(Original description) The shell is ovate-conical and can be white, red, brown, or sometimes variegated. It has 5 convex whorls with regular, deeply imprinted transverse furrows and prominent sutures. The aperture is oblong, and the outer lip is arched, often tinged with red, featuring a crenulate margin.
This marine species occurs in the Indo-west Pacific, from the Red Sea to Australia (New South Wales, Queensland)