Family name แก้วอุดร (Kaewudon 
, แก้วอุดร, Keawudon ) , throughout the world, is a very rare surname. The cognomen แก้วอุดร is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Very seldom, แก้วอุดร is the forename as well as the last name.