Cognomen Chumnannarongsak (Chumnannarongsak 
) , across the world, is an extremely rare family name. The surname Chumnannarongsak is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Chumnannarongsak | Thailand |
Tharnrudee, Tharnruedee, and Phattranit