Last name ศิริทรัพย์ (ศิริทรัพย์ 
, Sirisap 
, Sirisup 
) , all around the world, is quite a rare surname. The cognomen ศิริทรัพย์ is habitual in Thailand, where it is quite a rare surname, Germany, where it is an extremely rare surname, and the United States. Much less frequently, ศิริทรัพย์ is the forename as well as the last name.