Last name อีสาน (Isan 
, Isaan 
, Isarn 
) , across the world, is quite a rare surname. The surname อีสาน is characteristic of North Macedonia, where it is quite a rare surname, Romania, where it is a rare surname, and Malaysia. In absolute terms, it is the most numerous in Indonesia, India, and Malaysia. More frequently, อีสาน is the forename as well as the last name.