Cognomen ฤกษ์จำนงค์ (ฤกษ์จำนงค์, Rerkjumnong 
) , all around the world, is an extremely rare last name. The cognomen ฤกษ์จำนงค์ is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Rerkjumnong | Thailand |