Family name ปลั่งสุวรรณ (ปลั่งสุวรรณ, Plangsuwan 
) , all around the world, is an extremely rare cognomen. The family name ปลั่งสุวรรณ is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Plangsuwan | Thailand |