Turbo japonicus is a species of sea snail, a marine gastropod mollusk, in the family Turbinidae.

[1][2][3] (Described as Turbo cernicus) The solid, subventricose, imperforate shell has an ovate conic shape.

The convex whorls are sloping above, minutely obliquely striate, encircled by wide flattened ribs, alternating with smaller.

The body whorl is obtusely angulated above, lightly depressed above the angle, and scarcely canaliculate.

[4] This species occurs in the Indian Ocean off Mauritius and Réunion; also in the Central Pacific.