Cognomen พัฒนชาติ (Pattanachat 
, พัฒนชาติ , Phatthanachat ) , worldwide, is a very rare last name. The last name พัฒนชาติ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Much more prevalently, พัฒนชาติ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Pattanachat | Thailand, United States |
| พัฒนชาติ, Patthanachat, Phatthanachat | Thailand |
Patanachart, Patanachat, Patanachatr, Patnachat, Pattanachart, Pattanachatr, Pattanachut, Pattanchart, Patthanachart, Patthanachatthanathon, Phanachart, Phatanachat, Phathanachat, Phattanachat, Phatthanachaat, and Phatthanachatthanath