Cognomen แก้วพงษ์พันธ์ (แก้วพงษ์พันธ์, Keawphongphan 
) , across the world, is an extremely rare last name. The cognomen แก้วพงษ์พันธ์ is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Keawphongphan | Thailand |