Family name Vichit-Vadkan (Vichit-Vadkan 
) , around the world, is an extremely rare cognomen. The last name Vichit-Vadkan is habitual in Northern America, particularly the United States, where it is an extremely rare surname. Parts of the name also exists independently as a first name Vichit, and a last name Vadkan.
| VARIANT | COUNTRY |
|---|---|
| Vichit-Vadkan | United States |