Glossodoris acosti is a species of sea slug, a dorid nudibranch, a shell-less marine gastropod mollusk in the family Chromodorididae.[1]
The type locality for species is Rempi, Madang Province, Papua New Guinea. Paratypes from the Philippines are included in the original description. Probably widespread in the central Indo-Pacific Ocean.
Previously confused with Glossodoris cincta this species is distinguished by details of colouring and internal anatomy as well as DNA sequences from other species of very similar appearance.