Actinodiscus
The genus name Actinodiscus may refer to:
- Actinodiscus de Blainville, 1830 (Animalia, Anthozoa, Discosomidae): Accepted senior homonym, considered junior synonym of Discosoma
- Actinodiscus Greville, 1863 (Chromista, Stictodiscaceae)
- Actinodiscus Smith & Paul, 1982 (Animalia, Echinodermata, Cyclocystoidea): primary junior homonym, replaced by Scotiadiscus Reich & Smith, 2008