Surname รัสส์ (Rat 
, รัสส์ 
) , all around the world, is a common cognomen. The family name รัสส์ is habitual in Romania, where it is quite a common surname, France, where it is quite a rare surname, and Oman. Not in comparison with a country's population, it most frequently occurs in Bangladesh, France, and Romania. Likewise, รัสส์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rat | Romania, Bangladesh, Myanmar, France, India |
| รัสส์ | Thailand |