Family name วัชรชัยโสภณศิริ (วัชรชัยโสภณศิริ 
, Watchrachaisoponsiri, Wacharachaisophonsir) , all around the world, is a very rare surname. The last name วัชรชัยโสภณศิริ is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname.