Meaning A boy's name of Arabic origin, it means "a leader of the Beni-Koreish.." Origin of Kosai Arabic +-100%Zoom level changed to 1 Popular Middle Names Pronunciation 🔊 Listen Kosai Similar Names Aabid Cadwalader Cadwaladyr Cyrus Donovan Zaeem Naqeeb Faik Raheesh Sarwar Year by Year Popularity of Kosai