Cognomen ไชยแก้ว (Chaikaew 
, ไชยแก้ว, Chaiyakaew ) , across the world, is quite a rare surname. The cognomen ไชยแก้ว is habitual in Thailand, where it is quite a rare surname, Switzerland, where it is a very rare surname, and Malaysia. Not in comparison with a country's population, it most frequently occurs in Thailand, the United States, and Switzerland.