Cognomen สิงหฤกษ์ (สิงหฤกษ์ 
, Singharerk 
) , in all the world, is a rare last name. The family name สิงหฤกษ์ is characteristic of Thailand, where it is a rare surname, and the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| สิงหฤกษ์ | Thailand |
| Singharerk | Thailand, United States |