Surname ขุนพจน์ (ขุนพจน์ 
) , throughout the world, is a very rare cognomen. The surname ขุนพจน์ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Also, ขุนพจน์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| ขุนพจน์ | Thailand |