The Mitsubishi Group (三菱グループ, Mitsubishi Gurūpu) (also known as the Mitsubishi Group of Companies or Mitsubishi Companies) is a group of autonomous Japanese multinational companies covering a range of businesses which share the Mitsubishi brand, trademark, and legacy.n 1873, its name was changed to Mitsubishi Shokai. The name Mitsubishi (三 菱) consists of two parts:  mitsu  meaning three and  hishi  (which becomes  bishi  under rendaku) meaning  water caltrop  (also called water chestnut), and hence  rhombus , which is reflected in the company's logo.