Last name Østman (Østman 
) , in the world, is a very rare family name. The surname Østman is habitual in Northern Europe, particularly Denmark, where it is a rare surname, and Norway, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Østman | Denmark, Norway |
| bjørn østman researcher (ORCID 0000-0001-8563-1247) |
|