Crosseola bollonsi is a species of minute sea snail, also known as a micromollusc, belonging to the family Conradiidae. It is a marine gastropod mollusc that inhabits oceanic waters. Like other members of its genus, Crosseola bollonsi is characterized by its small, coiled shell and its adaptation to benthic marine environments.
The height of the shell attains 4 mm, its diameter 3.3 mm.
This species is endemic to the North Cape, New Zealand.