Last name มธุพจน์ (มธุพจน์ 
) , in the world, is a rare cognomen. The surname มธุพจน์ is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname. Very seldom, มธุพจน์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| มธุพจน์ | Thailand |