Cyclostoma tricarinata Say, 1817 (original combination) Valvata tricarinata, common name the three-ridge valvata or threeridge valvata, is a species of small freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Valvatidae, the valve snails.

This species occurs in North America.

There is great variation in the degree of carination of the shell.

[2] Valvata tricarinata is abundant in nearly all lacustrine and fluviatile deposits in North America of the Pleistocene period.

[2] This article incorporates public domain text from the reference.