Surname อิทธิคุณ (อิทธิคุณ 
, Ittikoon , Itsakhun ) , in the world, is a very rare last name. The last name อิทธิคุณ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Likewise, อิทธิคุณ is the forename as well as the last name.