Surname อรัญฤทธิ์ (อรัญฤทธิ์ 
) , worldwide, is a very rare last name. The family name อรัญฤทธิ์ is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname. Very seldom, อรัญฤทธิ์ is the forename as well as the last name.