Cognomen Čhan (Čhan 
, Чхан 
) , in the world, is a rare last name. The cognomen Čhan is characteristic of Ukraine, where it is a rare surname, Myanmar, and Kazakhstan, where it is a very rare surname. Not in comparison with a country's population, it is commonest in Ukraine, Myanmar, and Russia. Likewise, Čhan is the forename as well as the last name.