Cognomen Ganska (Gans 
, Ganz , Ganska 
) , across the world, is a common surname. The last name Ganska is characteristic of Liechtenstein, where it is quite a common surname, Switzerland, and Israel, where it is quite a rare surname. Not in comparison with a country's population, it is the most numerous in Germany, the United States, and Indonesia. Very seldom, Ganska is the forename as well as the last name.