2019-6-20 · The Mitsubishi Group (三菱グループ, Mitsubishi Gurūpu, also known as the Mitsubishi Group of Companies or Mitsubishi Companies, and informally as the Mitsubishi Keiretsu) is a group of autonomous Japanese multinational companies in a variety of industries.. It is historically descended from the Mitsubishi zaibatsu, a unified company which existed from 1870, founded by Iwasaki Yatarō ...