The meaning of Keyan is  Keyan is an indirect Quranic name for boys that means being, existence, essence. It is derived from the K-W-N (existence, being, was) root, which is one of the most common roots of the Arabic language, used over 800 times in the Quran:
Keyan Name In Arabic : كيان
Keyan Name In Bangla : কেয়ন
Keyan Name In Urdu : کیں
Keyan Name In Hindi : केयन