Surname Khaian (Khaian 
, Хаян 
) , worldwide, is a rare family name. The surname Khaian is habitual in Ukraine, where it is a rare surname, Belarus, and Kazakhstan, where it is a very rare surname. Not in comparison with a country's population, the name is most common in Ukraine, Russia, and Kazakhstan. Much less frequently, Khaian is the forename as well as the last name.