Mount Maru (丸山, Maru-yama) is a lava dome located in the Nipesotsu-Maruyama Volcanic Group of the Ishikari Mountains, Hokkaidō, Japan.

Mount Maru is also known as Higashi-Tokachi-Maruyama (東十勝丸山)[2] or Higashi-Taisetsu-Maruyama (東大雪丸山)[3] to distinguish it from other mountains with the same name.

[1] The western flank of the mountain shows accretionary complex from the late Eocene to the early Miocene.

The eastern flank shows non-alkaline mafic volcanic rock from the early to middle Miocene.

The mountain is topped with non-alkaline mafic rock from the middle Pleistocene.