Ophiodermella inermis is a species of sea snail, a marine gastropod mollusk in the family Borsoniidae.

The protoconch is more or less eroded, but apparently smooth, acute, and including about two and a half whorls.

The subsequent whorls are rather flat, compressed and appressed at and in front of the suture, with a rounded base and inconspicuous anal fasciole.

The succession of undulations or slightly swollen segments gives a slightly cancellate effect to the part of the whorl which bears them, but there are no axial ribs, the effect being produced rather by depressions between the rather coarse incremental lines.

[3] This species occurs in the Pacific Ocean from Alaska to California.