Little Malheur River

{{Use American English|date=February 2025}}

{{Infobox river

| name = Little Malheur River

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| map_size = 300

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| pushpin_map = USA Oregon

| pushpin_map_size = 300

| pushpin_map_caption= Location of the mouth of the Little Malheur River in Oregon

| subdivision_type1 = Country

| subdivision_name1 = United States

| subdivision_type2 = State

| subdivision_name2 = Oregon

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| subdivision_type4 = County

| subdivision_name4 = Baker, Grant, Malheur, and Harney

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| length = {{convert|31|mi|km|abbr=on}}{{cite book|author=Palmer, Tim|title=Field Guide to Oregon Rivers|publisher=Oregon State University Press|location=Corvallis|year=2014|page=274|isbn=978-0-87071-627-0}}

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| discharge1_avg = {{convert|18|cuft/s|m3/s|abbr=on}}

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| source1 = Bullrun Rock

| source1_location = Monument Rock Wilderness, Wallowa–Whitman National Forest, Baker County, Blue Mountains

| source1_coordinates= {{coord|44|20|02|N|118|19|47|W|display=inline}}{{cite web | work = Geographic Names Information System| publisher = United States Geological Survey | date = November 28, 1980 | url = {{gnis3|1147052}} | title = Little Malheur River | accessdate =November 6, 2014}}

| source1_elevation = {{convert|7138|ft|abbr=on}}Source elevation derived from Google Earth using GNIS coordinates.

| mouth = North Fork Malheur River

| mouth_location = Horse Flat, Harney County

| mouth_coordinates = {{coord|44|01|08|N|118|15|32|W|display=inline,title}}

| mouth_elevation = {{convert|3678|ft|abbr=on}}

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| basin_size = {{convert|135|sqmi|abbr=on}}

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The Little Malheur River is a {{convert|31|mi|km|adj=on}} tributary of the North Fork Malheur River in the eastern part of the U.S. state of Oregon. Beginning on the flanks of Bullrun Rock in the Monument Rock Wilderness of the Blue Mountains, the river flows generally south through parts of two national forests, Wallowa–Whitman and Malheur to meet the North Fork at Horse Flat, north of Juntura.{{cite book|title=Oregon Road and Recreation Atlas|publisher=Benchmark Maps|location=Santa Barbara, California|year=2012|edition=5th|pages=67, 79|isbn=978-0-929591-62-9}} Despite its short length, it flows through parts of four counties, listed from source to mouth: Baker, Grant, Malheur, and Harney.

In 2002, fire burned much of the forest along the canyon of the upper river. The Little Malheur Trail, maintained by the United States Forest Service, follows the river for about {{convert|7|mi|km}} through the wildfire area.{{cite web|title=Little Malheur Trail #366|publisher=U.S. Forest Service|url=http://www.fs.usda.gov/recarea/malheur/recreation/fishing/recarea/?recid=40114&actid=43|accessdate=November 6, 2014}}