Hiyama subprefecture (檜山) is located in Hokkaido, Japan.
Cities No city is located. Districts Okushiri Okushirigun Okushiri Kudo Kudogun Taisei Nishi Nishigun Otobe Kumaishi Setana Setanagun Setana Kitahiyama Imakane Hiyama Esashi (capital) Kaminokuni Assabu
Districts Okushiri Okushirigun Okushiri Kudo Kudogun Taisei Nishi Nishigun Otobe Kumaishi Setana Setanagun Setana Kitahiyama Imakane Hiyama Esashi (capital) Kaminokuni Assabu