Worldwide, Khayyun (Хаиюн , Khayyun ) is an extremely rare male given name. More frequently, Khayyun is the last name as well as the forename.
Хайюн, and Хайюнь
Nur, and Muhammad
, Khayyun 
) is an extremely rare male given name. More frequently, Khayyun is the last name as well as the forename.