Family name จรรยาพจน์ (จรรยาพจน์ 
) , all over the world, is a very rare last name. The cognomen จรรยาพจน์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Much less frequently, จรรยาพจน์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| จรรยาพจน์ | Thailand |