Last name אוסטרמן (Osterman 
, Österman 
, אוסטרמן 
) , globally, is quite a common surname. The last name אוסטרמן is characteristic of Slovenia, where it is quite a common surname, Sweden, and Finland. Measured by absolute frequency, the name is most common in the United States, Sweden, and Finland. Very seldom, אוסטרמן is the forename as well as the last name.