Family name Östborn (Östborn 
) , across the world, is a very rare cognomen. The last name Östborn is habitual in Northern Europe, particularly Sweden, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Östborn | Sweden |
| gunnar östborn (b. 1906) |
|
|
| yngve östborn Swedish architect, SE (b. 1919) |
|