Family name Laungoon (Laungoon 
) , all around the world, is a very rare surname. The surname Laungoon is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Laungoon | Thailand |
Santipap, Chartpreecha, Piyaporn, Chaiyakrit, and Punyachot