Mexichromis multituberculata is a species of sea slug, a dorid nudibranch, a shell-less marine gastropod mollusk in the family Chromodorididae.
This species has purple spots around the edge of the mantle. The mantle also has scattered purple-tipped tubercules. It is frequently confused with Mexichromis katalexis which is similar but has orange markings at the edge of the mantle instead of purple markings containing a darker tubercle. The two species may be found together, feeding on the same sponge.
