In all the world, สายแก้ว (Saikaew 
, Saikaeo , สายแก้ว) is a very rare dominantly feminine, but uncommonly boy's forename. The forename สายแก้ว is habitual in South-eastern Asia, particularly Thailand, where it is a very rare dominantly girly, but seldom male name. More prevalently, สายแก้ว is the last name as well as the forename.