Last name ศิริรัตน์ธำรง (ศิริรัตน์ธำรง, Siritattamrong 
, Siriratthumrong) , in the entire world, is an extremely rare family name. The surname ศิริรัตน์ธำรง is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname.