Surname สายแก้ว (Saikaew 
, Saikaeo , สายแก้ว) , in all the world, is quite a rare cognomen. The family name สายแก้ว is habitual in South-eastern Asia, particularly Thailand, where it is quite a rare surname, and Malaysia, where it is a very rare surname. Much less frequently, สายแก้ว is the forename as well as the last name.