Surname Flatberg (Flatberg 
) , throughout the world, is a very rare cognomen. The last name Flatberg is characteristic of Norway, where it is a rare surname, and the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Flatberg | United States, Norway |
|
per flatberg Norwegian environmentalist, NO (b. 1937) |
|
| kjeld ivar flatberg botanist (b. 1943) |
|
|
| truls flatberg Ph.D. Universitetet i Oslo 2004 |
|