Surname สุทธิ์ศิริ (Sutsiri 
, สุทธิ์ศิริ ) , throughout the world, is a rare cognomen. The last name สุทธิ์ศิริ is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname. Likewise, สุทธิ์ศิริ is the forename as well as the last name.