Anatoma concinna is a species of small sea snail, a marine gastropod mollusk or micromollusk in the family Anatomidae.
(Original description in Latin) The shell is ovate and somewhat depressed. Its spire is small, scarcely elevated, and narrowly and deeply umbilicate. It has 2ý convex whorls, which are neatly decussated (crossed) with elevated radial and concentric striae. The aperture is oblique and sub-orbicular.
The ovate shell is rather depressed. The small spire is scarcely elevated and narrowly, profoundly umbilicate. The 2ý convex whorls are decussated by elevated radiating and concentric striae. The oblique aperture is suborbicular.
This marine species occurs off Japan.