Cognomen พล่อง (Phlong 
, พล่อง) , across the world, is a rare family name. The surname พล่อง is habitual in Malaysia, where it is a very rare surname, Cambodia, and Australia. Measured by absolute frequency, the name is most common in the United States, Malaysia, and Cambodia. Much less frequently, พล่อง is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Phlong | Canada, Cambodia, Malaysia, Thailand, United States |