Volvarina exilis, common name the three-belted marginella, is a species of sea snail, a marine gastropod mollusk in the family Marginellidae, the margin snails.

The shell is conically cylindrical, opaque-white and shining.

The whorls are rather swollen at the upper part and attenuated at the lower.

The outer lip is moderately flexuous.

[2] This marine species occurs off Morocco.