Family name ฤทธิ์เดชา (ฤทธิ์เดชา 
) , worldwide, is a very rare last name. The surname ฤทธิ์เดชา is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Very seldom, ฤทธิ์เดชา is the forename as well as the last name.