Family name Кошиба (Koshiba 
, Кошиба) , all around the world, is a rare cognomen. The last name Кошиба is characteristic of Belgium, where it is a rare surname, Japan, where it is a very rare surname, and Brazil. In absolute terms, it is the most numerous in Japan, Brazil, and the United States. Also, Кошиба is the forename as well as the last name.