Mount Ahoro
{{short description|Mountain in Hokkaido, Japan}}
{{Infobox mountain
| name = Mount Ahoro
| other_name = 阿幌岳
| photo =
| photo_caption =
| elevation_m = 977
| elevation_ref =
| prominence_m =
| prominence_ref=
| range = Akan Volcanic Complex
| parent_peak =
| listing = Mountains and hills of Japan
| map = Japan
| range_coordinates =
| label_position = left
| coordinates = {{coord|43|31|02|N|144|04|15|E|type:mountain_region:JP_scale:100000|format=dms|display=inline,title}}
| coordinates_ref =
| topo = Geographical Survey Institute 25000:1 木禽岳
50000:1 斜里
| type = volcanic
| age = Late Miocene-Pliocene
| volcanic_arc = Kurile arc
| last_eruption =
| first_ascent =
| easiest_route =
}}
{{nihongo|Mount Ahoro|阿幌岳|Ahoro-dake}} is a mountain in Tsubetsu, Hokkaidō, Japan. It is the source of the Abashiri River.{{cite web|url=http://www.hkd.mlit.go.jp/zigyoka/z_kasen/kawa/pro_abasiri.html|script-title=ja:網走川|publisher=Ministry of Land, Infrastructure and Transport and Tourism Hokkaido Regional Development Bureau|language=Japanese|accessdate=2009-05-07|url-status=dead|archiveurl=https://web.archive.org/web/20071230110330/http://www.hkd.mlit.go.jp/zigyoka/z_kasen/kawa/pro_abasiri.html|archivedate=2007-12-30}} The mountain is made up of non-alkaline mafic volcanic rock that is 1.7 million to 7 million years old.{{cite web|url=http://riodb02.ibase.aist.go.jp/db084/kihon/hokkaido_e.xml|title=Hokkaido|year=2007|work=Seamless Digital Geological Map of Japan|publisher=Geological Survey of Japan, AIST |accessdate=2011-07-10}} N3(102) per legend; located just northwest of Mt. Oakan (1370m). Map shows 978m elevation.