Last name ธนาฤทธิ์ (ธนาฤทธิ์ 
) , throughout the world, is a very rare family name. The cognomen ธนาฤทธิ์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Likewise, ธนาฤทธิ์ is the forename as well as the last name.