Last name ดุจเพ็ญ (ดุจเพ็ญ 
) , globally, is a very rare cognomen. The last name ดุจเพ็ญ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Much less frequently, ดุจเพ็ญ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| ดุจเพ็ญ | Thailand |
ธรกร, โอภาส, วิจิตร, ประเสริฐ, and เยาวลักษณ์