Eika may refer to the following:
Eika, Møre og Romsdal, an island in Ulstein municipality, Møre og Romsdal, Norway Hallvard Eika, a Norwegian politician Sverre Eika, a Norwegian footballer Eika (company), a subsidiary of the Mondragon Corporation in Spain Eika Gruppen, a Norwegian banking alliance Eika Ebisu, a fictional character in Wily Beast and Weakest Creature from the Touhou Project video game series