Cognomen หรัด (Rat 
, หรัด 
) , across the world, is a common family name. The cognomen หรัด is characteristic of Romania, where it is quite a common surname, France, where it is quite a rare surname, and Oman. Measured by absolute frequency, it most frequently occurs in Bangladesh, France, and Romania. Also, หรัด is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rat | Romania, Bangladesh, Myanmar, France, India |
| หรัด | Thailand |