Hart Mountain

{{For|the peak in Manitoba, Canada|Hart Mountain (Manitoba)}}

{{Use mdy dates|date=January 2025}}

{{Infobox mountain

| range = Hart Mountain

| photo = Hart Mountain, Lake County, Oregon.jpg

| photo_caption = West face of Hart Mountain

| highest = Warner Peak

| elevation_ft = 8024

| elevation_ref = {{NAVD88}}{{cite ngs |pid=NX0282 |name=Hart |accessdate=2016-04-30}}

| prominence_ft = 2117

| prominence_ref = {{cite web |url=http://www.peakbagger.com/peak.aspx?pid=3296 |website=peakbagger.com |title=Warner Peak, Oregon |access-date=2016-04-30}}

| map = USA Oregon

| map_size = 240

| map_caption = Location in Oregon

| location = Lake County, Oregon, U.S.

| coordinates = {{coord|42.459696911|N|119.741367078|W|type:mountain_region:US-OR_scale:100000_source:NGS|format=dms|display=inline,title}}

| range_coordinates =

| coordinates_ref =

| topo = USGS Warner Peak and
USGS Hart Lake

| type =

| age =

| first_ascent =

| easiest_route =

}}

Hart Mountain is a fault-block mountain, in Lake County, Oregon, U.S. It lies about {{convert|30|mi|km|0}} to the east of Lakeview.

It is sometimes confused with a mountain range, but is more properly described as a mountain. The two highest peaks are Warner Peak and Hart Peak. Warner Peak is the highest point on the mountain, at {{convert|8024|ft}}. Hart Peak is {{convert|7724|ft|m}} and is located at {{coord|42.413673|-119.800883|format=dms|region:US-OR_type:mountain|name=Hart Peak}}.{{cite web |url=https://www.peakbagger.com/peak.aspx?pid=3297 |website=peakbagger.com |title=Hart Peak |access-date=2021-12-03}}

Hart Mountain is named for the heart-shaped brand used by the pioneer ranchers Henry C. Wilson and his son-in-law C.G. Alexander. Their ranch was located in the Warner Valley at the base of Hart Mountain.{{cite ogn |edition=7 |page=449}}

The top of the mountain is part of the Hart Mountain National Antelope Refuge, with pronghorn antelope and bighorn sheep. At the western base of the mountain lies the Warner Wetlands ACEC, a reserve managed by the Bureau of Land Management and home to waterfowl and other wildlife. A trail leads half a mile into the wetlands to a hide.

{{Wide image|Hart Mountain panorama.jpg|800px|View from Hart Mountain|70%|none}}

{{Wide image|Warner Valley pano.jpg|800px|The same view during low water in June 2015. Upper Campbell Lake is to the left, Campbell Lake to the right|70%|none}}