In ancient Greek religion and mythology, Dione (/daɪˈoʊniː/; Ancient Greek: Διώνη, romanized: Diṓnē, lit. 'she-Zeus') is an oracular goddess and Titaness.

Dione (Διώνη Diṓnē, from earlier *Διϝωνᾱ Diwōnā) is essentially the feminine of the genitive form of Greek Ζεύς Zeús, that is, Διός Diós (from earlier Διϝός Diwós), "of Zeus".