Meaning A boy's name of Japanese origin, it means "It means respect, lucky, excellence, and wise". Origin of Kei/Kou Japanese Popular Middle Names Pronunciation 🔊 Listen Kei/Kou Similar Names Minori/ Minoru Kenichi Yoshio Abdul Lateef Al Kareem Fadl Allah Gohar Antal Ajib Uthaman Year by Year Popularity of Kei/Kou