Family name Chihun (Chihun 
, Чихун 
) , in all the world, is a rare cognomen. The last name Chihun is characteristic of Ukraine, where it is a rare surname, Kazakhstan, and Belarus, where it is a very rare surname. In absolute terms, it most frequently occurs in Ukraine, Russia, and Kazakhstan. Likewise, Chihun is the forename as well as the last name.