Guttula sibogae is a species of extremely small deep water sea snail, a marine gastropod mollusc in the family Seguenziidae.

Only under a strong lens very faint growth striae and microscopic punctuations may be observed.

The body whorl is rounded, with a convex base and a small perforation, nearly concealed by the columella.

It has about 20 transverse rows of teeth; the rhachidian tooth is broad, depressed quadrangular with rounded upper angles and pointed basal ones.

The outer ones are shorter, broader, with a few denticles on each side near the top, visible if expanded.