Last name Forsæth (Forsæth 
) , all over the world, is an extremely rare cognomen. The last name Forsæth is habitual in Northern Europe, particularly Norway, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Forsæth | Norway |
|
lars larsen forsæth farmer and father of the Constitution of Norway, NO (b. 1759) |
|
|
paul larsen forsæth farmer and member of the Storting, NO (b. 1762) |
|