Eoenantiornis is a genus of enantiornithean birds which lived during the early Cretaceous period (124.6 Ma ago). It is known from a single fossil specimen found in the Yixian Formation in Liaoning province, China. In 1999, the type species Eoenantiornis buhleri was named and described by , Larry Martin, Zhou Zhonghe and John Alan Feduccia. The generic name combines a Greek ἠώς, èos, "dawn" with Enantiornis, in reference to a presumed more basal position in relation to that genus. The specific name honours the late German paleornithologist . In 2005, Eoenantiornis was completely redescribed.