Borsonella coronadoi is a species of sea snail, a marine gastropod mollusk in the family Borsoniidae.

(Original description) The slender shell is acute with about ten whorls.

Besides the lines of growth, both the fasciole and the anterior part of the whorl show indications under a lens of obscure regular distant spiral striae, and are also more or less marked with a faint vermicular reticulation of the surface.

The anal sulcus is deep and wide, reaching the suture The outer lip is thin, sharp, and arcuately produced.

The axis is impervious, cnual short, wide, deep, slightly recurved with a fairly well-marked fascicle.