Surname Fladeby (Fladeby 
) , across the world, is a very rare cognomen. The cognomen Fladeby is characteristic of Northern Europe, particularly Norway, where it is quite a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Fladeby | Norway |
| petter fladeby sound designer (b. 1961) |
|
|
| tobias fladeby Norwegian ice hockey player (b. 1996) |
|