Family name หทัยรัตนกุล (หทัยรัตนกุล 
) , all over the world, is a very rare surname. The cognomen หทัยรัตนกุล is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| หทัยรัตนกุล | Thailand |
|
สินทวีชัย หทัยรัตนกุล Thai footballer, TH (b. 1982) |
|