Family name ลาภถิรธัญ (ลาภถิรธัญ 
) , throughout the world, is an extremely rare cognomen. The cognomen ลาภถิรธัญ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| ลาภถิรธัญ | Thailand |
สุรเดช, and เกษมศักดิ์