Last name Гадиан (Gadian 
, Гадиан 
, Gadyan 
) , all over the world, is quite a rare surname. The cognomen Гадиан is characteristic of Philippines, where it is quite a rare surname, Israel, where it is a rare surname, and Georgia. In absolute terms, it is commonest in Philippines, Israel, and Russia. Much less frequently, Гадиан is the forename as well as the last name.