Last name ตะวันแก้ว (Sunkaew 
, ตะวันแก้ว, Thawnkaeow) , throughout the world, is a very rare cognomen. The cognomen ตะวันแก้ว is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Very seldom, ตะวันแก้ว is the forename as well as the last name.