Last name ทองแก้ว (Thongkaeo 
, Thongkeaw 
, ทองแก้ว) , all over the world, is a rare surname. The family name ทองแก้ว is characteristic of Thailand, where it is quite a rare surname, and Finland, where it is a very rare surname. Very seldom, ทองแก้ว is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Thongkaeo | Thailand |
| Thongkeaw | Thailand, Finland |
Thakongkaew, Thognkaeo, Thognkaew, Thomgkeaw, Thongaiao, Thonggaew, Thonggew, Thongkaee, Thongkaeokoed, Thongkaev, Thongkaew, Thongkaokaew, Thongkaue, Thongkawpurg, Thongkeaij, Thongkeamkeaw, Thongkeow, Thongkeur, Thongkhaew, Thongkkaew, Thongkongkaeo, Thongkuae, Thongkuew, Thongsikaew, Thongvkaew, Thuenkaew, Tongkaaw, Tongkaem, Tongkaew, Tongkeaj, Tongkeao, Tongkeiw, Tongpeaw, Tongsikaew, and Tongteaw