Green River (North Dakota)

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

{{Infobox river

| name = Green River

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| image = Green River near New Hradec ND.jpg

| image_caption = Green River flowing over a weir near New Hradec.

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| subdivision_type1 = Country

| subdivision_name1 = United States

| subdivision_type2 = State

| subdivision_name2 = North Dakota

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| source1_coordinates= {{coord|47.15|-103.2772222|format=dms|display=inline}}

| source1_elevation = {{convert|2763|ft|abbr=on}}

| mouth = Heart River

| mouth_location =

| mouth_coordinates = {{coord|46.8619444|-102.5858333|format=dms|display=inline,title}}

| mouth_elevation = {{convert|2293|ft|abbr=on}}

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The Green River is a tributary of the Heart River, approximately 20 mi (32 km) long, in western North Dakota in the United States.{{gnis|1034902|Green River}}

It rises in the prairie country of southwestern Billings County, near Saddle Buttes, and flows ESE past New Hradec, and joins the Heart near Gladstone.