Companies based in Gunma Prefecture

is the automobile manufacturing division of Japanese transportation conglomerate Subaru Corporation (formerly known as Fuji Heavy Industries), the twenty-first largest automaker by production worldwide in 2017.

Japanese automotive and electrical equipment manufacturer

Japanese electronics retailer

Japanese corporation

thumb|Headquarters of MannanLife in Tomioka thumb|Ume-flavoured "Konnyaku Batake" made by MannanLife is a Japanese company that sells "Konnyaku Batake" fruit-flavoured konnyaku jelly. MannanLife holds a 60 to 70 percent share of the konnyaku jelly market in Japan.