Mount Iwanai

{{Short description|Mountain in Hokkaidō, Japan}}

{{No footnotes|date=August 2024}}

{{Infobox mountain

| name = Mount Iwanai

| other_name = 岩内岳

| photo = Mt. Iwanaidake.png

| photo_caption = Seen from Hachinosawa.

| elevation_m = 1497.7

| elevation_ref =

| prominence =

| listing = List of mountains and hills of Japan by height

| location = Hokkaidō, Japan

| range = Hidaka Mountains

| coordinates = {{coord|42|39|29|N|142|51|45|E|region:JP_type:mountain|display=inline,title}}

| topo = {{nihongo|Geographical Survey Institute|国土地理院|Kokudochiriin}} 25000:1 岩内川上流, 25000:1 札内川上流, 50000:1 札内川上流

| type = Fold

| age =

| volcanic_arc/belt =

| last_eruption =

| first_ascent =

| easiest_route =

}}

{{nihongo|Mount Iwanai|岩内岳|Iwanai-dake}} is located in the Hidaka Mountains, Hokkaidō, Japan.