Ruby Mountain

{{Short description|Cinder cone in British Columbia, Canada}}

{{for|the United States mountain range|Ruby Mountains}}{{Inline|date=April 2024}}{{Infobox mountain

| name = Ruby Mountain

| photo =

| photo_caption =

| elevation_m = 1895

| elevation_ref =

| prominence_m = 265

| prominence_ref =

| location = British Columbia, Canada

| district = Cassiar Land District

| range = Teslin Plateau (southern Yukon Plateau)

| map = Canada British Columbia

| map_caption = Location in British Columbia

| relief=1

| label_position = right

| mapframe = yes

| mapframe-zoom = 8

| mapframe-caption = Interactive map of Ruby Mountain

| coordinates = {{coord|59|41|59|N|133|22|07|W|type:mountain_region:CA}}

| topo_maker = NTS

| topo_map = {{Canada NTS Map Sheet|104|N|11}}

| type = Cinder cone

| age = Holocene

| volcanic_region = Northern Cordilleran Volcanic Province

| last_eruption = 1898?

| first_ascent =

}}Ruby Mountain, locally known as Old Volcano, is a cinder cone in Stikine Region, British Columbia, Canada, located {{convert|23|km|mi|abbr=on}} northeast of Atlin and {{convert|6|km|mi|0|abbr=on}} south of Mount Barham. A recent collapse on the volcano's eastern side created a large landslide which dissects this side of Ruby Mountain. The volcano is the largest feature within the Atlin Volcanic Field.