Cognomen Phalangwan (Phalangwan 
) , around the world, is a very rare family name. The surname Phalangwan is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Phalangwan | Thailand |
Maliwan, Maneerat, Suwathana, and Suwatthana