Last name ฤทธิ์ประภา (ฤทธิ์ประภา 
) , all over the world, is a very rare surname. The last name ฤทธิ์ประภา is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Much less frequently, ฤทธิ์ประภา is the forename as well as the last name.