Last name แจ่มศิริ (Jamsiri 
, Chamsiri , แจ่มศิริ) , across the world, is a very rare family name. The surname แจ่มศิริ is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname, and Philippines, where it is an extremely rare surname. Also, แจ่มศิริ is the forename as well as the last name.