Family name สมนวลพรรณ (สมนวลพรรณ 
) , all around the world, is an extremely rare last name. The family name สมนวลพรรณ is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| สมนวลพรรณ | Thailand |