Family name Flatus (Flatus 
, Flato 
) , in all the world, is a rare surname. The surname Flatus is characteristic of Germany, where it is a rare surname, Sweden, and Norway, where it is a very rare surname. Measured by absolute frequency, the name is most common in Germany, the United States, and Sweden. Very seldom, Flatus is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Flatus | Germany, South Africa, United States |
| Flato | Germany, Sweden, United States, Canada, Brazil |