Iwan /iwan/ [2 sylls.] as a boys' name. Iwan's name origins are Russian, Slavic and Hebrew, and the meaning of the name Iwan is God is gracious.Iwan is a variant transcription of Ivan (Russian, Slavic, Hebrew): variation of Hebrew John.Owan is a conventional surname.wan /iwan/ [2 sylls.] as a boys' name. Iwan's name origins are Russian, Slavic and Hebrew, and the meaning of the name Iwan is God is gracious.