Bathyfautor multispinosus is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae.

The next whorls contain spirals and radiating ribs, forming small spines when they cross.

These lirae are closely beset with compressed spines, which resemble squamae, with very fine growth striae in the interstices.

The base of the shell is slightly convex, with fine growth striae and more conspicuous spirals, of which 5 near the periphery and 5 near the centre are considerably stronger.

The columella is cylindrical, slightly concave, obsoletely angular at the junction with the basal margin.