Eutychia, phonetically transliterated as Eftychia (/ˌɛftiˈhiːə/; Greek: ευτυχία) is a Greek female given name, meaning "happiness". It is derived from the Greek words εὖ (good) and τύχη (luck). The diminutive Effie is a pet form of Eftychia.
Notable people with the given name include: