Cognomen วัฒนจิตร (วัฒนจิตร 
, Vatthanachit, Wattanachit 
) , all over the world, is a very rare last name. The last name วัฒนจิตร is habitual in Thailand, where it is a very rare surname, and the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| วัฒนจิตร, Watthanachit | Thailand |
| Wattanachit | Thailand, United States |
Vatanajit, Vattanajit, and Watanajit