Sukashitrochus atkinsoni is a species of small sea snail, a marine gastropod mollusk or micromollusk in the family Scissurellidae, the little slit snails.

[1][3][4] The minute, brown shell attains a height of 2 mm.

The last whorl descends very deeply toward the aperture, with a strong keel at the shoulder, occupied by the anal fasciole, and another keel at the periphery, the space between them concave.

The umbilicus is narrowly perforated, funnel-shaped, and smooth inside.

On old shells the median carina becomes rounded on the last ¾ whorl, and there are numerous spiral riblets both above and below the slit fasciole.