Vaceuchelus cavernosus is a species of sea snail, a marine gastropod mollusk in the family Chilodontaidae.
The altitude of the shell attains 7ý mm, its maximum diameter 7ü mm.
A small globular white shell, containing five whorls; very conspicuously and profoundly pitted between the rounded nodulous keels.
This marine species occurs off Sri Lanka.