Surname อิศวฤทธิ์ (อิศวฤทธิ์ 
) , across the world, is a very rare family name. The last name อิศวฤทธิ์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Much less frequently, อิศวฤทธิ์ is the forename as well as the last name.