Family name Sommawan (Sommawan 
) , all over the world, is an extremely rare surname. Predominantly, Sommawan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sommawan | United States, Thailand |
Kasa, Pumprakobsri, Puttasupa, Klaithong, Kanoksikarin, Yodsuwan, Teawpaisitpong, Thongkun, Tippachon, Lowhaphandu, Bannawat, Anandechkitisuk, Suebsaysirisin, Pooyanon, Promyok, Sodasri, Saetan, Phooyanon, and Netthanomsak