Surname อุดมศักดิ์ศิริ (อุดมศักดิ์ศิริ 
) , in the world, is a very rare family name. The cognomen อุดมศักดิ์ศิริ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Very seldom, อุดมศักดิ์ศิริ is the forename as well as the last name.