Cognomen ธนทรัพย์อำไพ (ธนทรัพย์อำไพ, Thanasubumpai 
) , in all the world, is an extremely rare last name. The family name ธนทรัพย์อำไพ is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Thanasubumpai | Thailand |