Gunma Prefecture (or Gumma) (群馬県; Gunma-ken) is located in the Kanto region on Honshu island, Japan.
Gunma is the northwestern-most prefecture of the Kanto, and is mostly mountainous in the north, with more of the population concentrated in the southern half facing Saitama Prefecture.
Gunma is said to be shaped like a crane in flight (Jomo Karuta).