Odostomia baranoffensis is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies. This species is considered a synonym of Odostomia tenuisculpta Carpenter, 1864 by ITIS. Dall & Bartsch made the distinction based upon the following indications: \n* Odostomia tenuisculpta : incised spiral lines are strong on the early whorls and much finer on the later turns. \n* Odostomia baranoffensis : incised spiral lines are exceedingly fine; periphery of the whorls well rounded; summit of the whorls tabulated.