Ethalia sanguinea is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top-snails.

It is glossy and smooth except for fine growth lines and almost obsolete spirals.

The body whorl is wide and narrowly rounded at the periphery.

The lip is thin and simple, callused near the columellar insertion.

The umbilicus is wholly filled by a red callous pad, roughened by several irregular vein-like grooves.