Eion \eion\ as a boy's name is a variant of Ian (Scottish, Hebrew), Ion (Greek) and John (Hebrew), and the meaning of Eion is "God is gracious".

The baby name Eion sounds like Eon and Eian. Other similar baby names are Dion, Eton, Egon, Eilon, Elon, Ekon, Eron, Evon, Evion, Lion, Rion, Sion and Zion.