Oenopota tenuicostata is a species of sea snail, a marine gastropod mollusk in the family Mangeliidae.

[1] The length of the shell varies from 5 mm to 13 mm.

This species resembles Curtitoma decussata (Couthouy, 1839) but is smaller and has more numerous ribs.

[2] This marine species occurs off Greenland and Novaya Zemlya at depths between 200 m and 2702 m.

This Oenopota-related article is a stub.