Cognomen อิทธิวุฒิ (อิทธิวุฒิ 
, Ittiwut , Ittavut ) , around the globe, is a very rare last name. The surname อิทธิวุฒิ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. More prevalently, อิทธิวุฒิ is the forename as well as the last name.