Barbour's tropical racer (Mastigodryas bruesi) is a species of snake in the family Colubridae.

The specific name, bruesi, is in honor American entomologist Charles Thomas Brues, who was one of the collectors of the holotype.

[1][2] M. bruesi has been recorded in the southwest corner of Saint Vincent and is widespread all over the Grenadines islands.

[citation needed] It is also found on the southern half of Grenada, which is the farthest south it is distributed.

[citation needed] It has been introduced to Barbados,[1] probably around thirty years ago, where it has been incorrectly identified as Liophis perfuscus.