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Cognomen Loysuwan (Loysuwan ) , all over the world, is a very rare family name. The cognomen Loysuwan is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Loysuwan | Thailand |
Janda, Janya, Aomdaw, Sairung, Ms. Sairung, Boonsong, Prachuab, Thaneeya, Naruepan, Nopparut, Kittikorn, Pattharawut, and Nanthaphat