Cognomen กันตฤทธิ์ (กันตฤทธิ์ 
) , across the world, is a very rare last name. The last name กันตฤทธิ์ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Likewise, กันตฤทธิ์ is the forename as well as the last name.