Family name ลักษณกุล (ลักษณกุล 
, Losoponkul 
) , around the world, is a very rare cognomen. The last name ลักษณกุล is habitual in Thailand, where it is a rare surname, and the United States, where it is an extremely rare surname. Much less frequently, ลักษณกุล is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| ลักษณกุล | Thailand |
| Losoponkul | United States, Thailand |