Cognomen พุธรัตน์ (พุธรัตน์ 
) , across the world, is an extremely rare last name. The last name พุธรัตน์ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. More frequently, พุธรัตน์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| พุธรัตน์ | Thailand |
โพชะกะ, นามคุณ, สุขพงษ์ไทย, and แสนสีมล