Family name แสงวรรณกุล (แสงวรรณกุล 
, Saengvannakul , Seangwanakul ) , in the world, is a very rare last name. The cognomen แสงวรรณกุล is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Saengvannakul, แสงวรรณกุล, Seangwanakul, Sangwannakul | Thailand |