Family name Kangcasuwan (Kangcasuwan 
) , in all the world, is a very rare last name. The cognomen Kangcasuwan is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Kangcasuwan | Thailand |
Wanwisa, Hataipat, and Hathaiphat