Last name คูณแก้ว (Kunkaew 
, คูณแก้ว, Koonkaw ) , throughout the world, is a rare family name. The surname คูณแก้ว is characteristic of Thailand, where it is quite a rare surname, Malaysia, where it is a very rare surname, and France, where it is an extremely rare surname. Measured by absolute frequency, the name is most common in Thailand, Malaysia, and the United States. Much less frequently, คูณแก้ว is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kunkaew | Thailand, United States, Malaysia, France |
| Koonkaw | Thailand |
| Koonkaew | Thailand, United States |