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Greek
Yannis, Yiannis, or Giannis (Γιάννης) is a common Greek given name, a variant of John (Hebrew) meaning "God is gracious." Variants include Ioannis (Ιωάννης), Yanni (Also Janni), Iannis, Yannakis, Yanis, and the rare Yanno, usually found in the Peloponnese and Cyprus.
Feminine forms are Γιάννα (Yianna, Gianna) and Ιωάννα (Ioanna).