Cognomen Khumayun (Хумаюн 
, Khumayun) , all around the world, is a very rare last name. The surname Khumayun is habitual in Armenia, where it is a rare surname, Kyrgyzstan, and Ukraine, where it is an extremely rare surname. In absolute terms, the name is most common in Armenia, Kyrgyzstan, and Russia. More prevalently, Khumayun is the forename as well as the last name.