Throughout the world, พันธุ์ชัย (พันธุ์ชัย 
, Phanchai 
) is a very rare primarily masculine, but scarcely feminine first name. The first name พันธุ์ชัย is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare primarily boy's, but scarcely girly name. More prevalently, พันธุ์ชัย is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| พันธุ์ชัย | Thailand |
| Phanchai | Thailand, United States |