Family name Ratts (Ratts 
, Ратц 
) , worldwide, is a rare last name. The last name Ratts is habitual in Sweden, where it is a rare surname, Kazakhstan, and Brazil. Not in comparison with a country's population, it is the most numerous in the United States, Brazil, and Russia.
| VARIANT | COUNTRY |
|---|---|
| Ratts | United States, Sweden, Russia, Canada, Brazil |
| Ратц | Ukraine, Russia, Kazakhstan |
| barbara ann ratts (b. 1831) |
|
|
| alex ratts Brazilian anthropologist, BR |
|
|
| robert b ratts researcher |
|