Eonian is a 2018 album by Dimmu Borgir.

Eonian may also refer to: Eonian, relating to an aeon Eonians, one of the Pelasgians mentioned by Thucydides Eonian, a follower of Éon de l'Étoile Eonian Tradition, a tradition of the Order of the Lily and the Eagle "Eonian", a 2014 song by Elisa Eonian Records, an American record label of Charlotte

See also Eon (disambiguation)