Eothyris is an extinct genus of the family Eothyrididae. It was an insectivorous synapsid. It was closely related to Oedaleops. Only the skull of Eothyris, first described in 1937, is known. It had a 6 centimetres (2.4 inches) long skull, and its total estimated length is 30 centimetres (12 inches).
Species taxanomy provided by GBIF Secretariat (2022). GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via GBIF.org on 2023-06-13; License: CC BY 4.0