Family name อรฤทธิ์ (Orarit 
, อรฤทธิ์ ) , all around the world, is a very rare surname. The family name อรฤทธิ์ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Very seldom, อรฤทธิ์ is the forename as well as the last name.