Family name ศิริฤทธิ์ (Siririt 
, ศิริฤทธิ์ ) , around the world, is a rare cognomen. The cognomen ศิริฤทธิ์ is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname. Very seldom, ศิริฤทธิ์ is the forename as well as the last name.