Family name Frogn (Frogn 
) , all over the world, is an extremely rare last name. The surname Frogn is habitual in Northern Europe, particularly Norway, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Frogn | Norway |
| sigmund frogn Norwegian association football player (1904-1990) (b. 1904) |
|