Cognomen ประพันธ์ศิริ (ประพันธ์ศิริ 
) , in all the world, is a very rare last name. The last name ประพันธ์ศิริ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Much less frequently, ประพันธ์ศิริ is the forename as well as the last name.