Family name רוסבי (Rossby 
, רוסבי 
) , across the world, is a very rare last name. The family name רוסבי is characteristic of Sweden, where it is a rare surname, Israel, and Norway. Not in comparison with a country's population, it most frequently occurs in Sweden, Israel, and the United States. Likewise, רוסבי is the forename as well as the last name.