Nembrotha chamberlaini is a species of colorful sea slug, a dorid nudibranch, a marine gastropod mollusk in the family Polyceridae. It was first described in 1997. This species is known only from the Philippines and Indonesia. Nembrotha chamberlaini is white with streaks of black and occasionally yellow splashed across the upper mantle. It has very distinctive bright red gills and rhinophores. The foot and mouth parts are typically light-purple. This nudibranch has a very characteristic color pattern which is typical of species that display warning coloration to other species. N. chamberlaini can reach a length of 100mm.