Cognomen เลิศธรรมขจร (เลิศธรรมขจร 
, Lerthamkajon) , all around the world, is a very rare surname. The surname เลิศธรรมขจร is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| เลิศธรรมขจร | Thailand |