Surname Nassuwan (Nassuwan 
) , around the globe, is an extremely rare last name. The cognomen Nassuwan is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Nassuwan | Thailand |
Somporn, Kanokon, Nattamon, Varutchaya, and Varutchara