Tegula luctuosa is a species of sea snail, a marine gastropod mollusk in the family Tegulidae.

The solid, heavy shell is depressed, broadly umbilicate, and has a conoidal shape.

The upper ones have a strong carina midway between the sutures.

This species is characterized by its wide umbilicus and strongly keeled whorls.

[3] This species occurs in the Pacific Ocean between Peru and Chile.