Surname พิสูจน์ธรรม (พิสูจน์ธรรม 
) , worldwide, is an extremely rare cognomen. The cognomen พิสูจน์ธรรม is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| พิสูจน์ธรรม | Thailand |