Cognomen Ianan (Ianan 
, Янан 
) , globally, is a very rare surname. The family name Ianan is habitual in Greece, where it is a rare surname, Georgia, where it is a very rare surname, and Mexico, where it is an extremely rare surname. In absolute terms, it is the most numerous in China, Greece, and Mexico. More frequently, Ianan is the forename as well as the last name.