Yamamoto Heikichi (Japanese: 山本 兵吉, 1858 – July 1950) was a Japanese hunter. He is best known as a local hero for killing Kesagake, the giant brown bear involved in the Sankebetsu brown bear incident. He is reportedly to have killed over 300 brown bears in his lifetime. A resident of On'ne-no-sawa, Onishika, Rumoi District, Hokkaido (now Onishikatashiro, Obira), his main hunting grounds were the mountains of what was then Teshio Province, such as Mount Onishika.[1]