Surname ธนสุข (Dhanasuk 
, Tanasuk 
, ธนสุข ) , around the globe, is a very rare family name. The surname ธนสุข is habitual in Thailand, where it is a very rare surname, the United States, where it is an extremely rare surname, and India. More prevalently, ธนสุข is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Dhanasuk | India |
| Tanasuk | United States, India, Thailand |
| ธนสุข | Thailand |
| Dhonsuk | India, Thailand |
Tanaisuk, Tanasook, Thanitsuk, Thonnersuk, and Thonsook