Family name Fæhn (Fæhn 
) , in the entire world, is an extremely rare cognomen. The family name Fæhn is habitual in Northern Europe, particularly Norway, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Fæhn | Norway |
| helge fæhn Norwegian priest (1918-2008) (b. 1918) |
|
|
| ola fæhn Norwegian lawyer (b. 1965) |
|