Ondina mosti is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies.

[1][2][3] This species was named for B. van der Most, member of the former Malacological Working-group, the Hague.

[4] The shell reaches a length of 2 mm to 2.4 mm.

[4] This species occurs in the following locations at depths between 200 m and 400 m.:[1][4]

This Pyramidellidae-related article is a stub.