Family name ธนธัญญ์กนก (ธนธัญญ์กนก 
) , in the entire world, is an extremely rare cognomen. The last name ธนธัญญ์กนก is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| ธนธัญญ์กนก | Thailand |