Otinodoris is a genus of sea slugs, dorid nudibranchs, shell-less marine gastropod mollusks previously placed in the family Chromodorididae. It is now considered a synonym of Asteronotus Ehrenberg, 1831 and placed in the family Discodorididae Valdés (2002) tentatively tried to maintain Otinodoris as a separate genus, but lacked the necessary data. It was then consideredpossible that Otinodoris was a synonym of Peltodoris Bergh, 1880. It is now considered a synonym of Asteronotus Ehrenberg, 1831 and placed in the family Discodorididae