Oneida River

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

{{Infobox river

| name = Oneida River

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| image = Frozen Oneida River as viewed from my backyard in Clay, NY.jpg

| image_caption = A view of the frozen Oneida River in winter.

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| pushpin_map = USA New York#USA

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| pushpin_map_caption= Location of the mouth of the Oneida River in New York State.

| subdivision_type1 = Country

| subdivision_name1 = United States

| subdivision_type2 = State

| subdivision_name2 = New York

| subdivision_type3 = Region

| subdivision_name3 = Central New York

| subdivision_type4 = Counties

| subdivision_name4 = Onondaga, Oswego

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| length = {{convert|18|mi|km|abbr=on}}

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| discharge1_location= Euclid, New York{{cite web |url=http://ny.water.usgs.gov/pubs/wdr/wdrny133/04247000.2013.pdf |title=04247000 Oneida River near Euclid, NY, Water Data Report 2013 |publisher=United States Geological Survey |work=National Water Information System |date=1997–2013 |accessdate=December 30, 2015}}

| discharge1_min =

| discharge1_avg = {{convert|2997|cuft/s|m3/s|abbr=on}}

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| source1 = Oneida Lake

| source1_location = Brewerton

| source1_coordinates= {{coord|43|14|24|N|76|08|26|W|display=inline}}{{cite GNIS|970425|Oneida River|December 30, 2015}}

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| mouth = Oswego River

| mouth_location = Clay, New York

| mouth_coordinates = {{coord|43|12|04|N|76|16|49|W|display=inline,title}}

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The Oneida River is a river that forms a portion of the boundary between Oswego and Onondaga counties in central New York.{{cite web |url=http://www.dec.ny.gov/outdoor/89731.html |title=Oneida River |website=Dec.ny.gov |publisher=NYS Department of Environmental Conservation |accessdate=December 30, 2015}} The river flows {{convert|18|mi}} from Oneida Lake's outlet to its confluence with the Seneca River, where the two rivers combine to form the Oswego River that empties into Lake Ontario.

The river was known to the Onondaga people as Sah-eh,{{cite book |last1=Beauchamp |first1=William Martin |title=Aboriginal Place Names of New York (New York State Museum Bulletin, Volume 108) |date=1907 |publisher=New York State Education Department |page=149 |isbn=9781404751552 |url=https://books.google.com/books?id=MBQTAAAAYAAJ&pg=PA149 |accessdate=December 30, 2015}} and was referred to during the colonial era as the Onondaga River.{{cite book|last1=Whitford|first1=Noble E.|last2=Beal|first2=Minnie M.|title=History of the Canal System of the State of New York: Together with Brief Histories of the Canals of the United States and Canada|date=1906|publisher=Brandow Printing Company|location=Albany, NY|pages=569–575|chapter-url=https://books.google.com/books?id=fYrVAAAAMAAJ&pg=PA569|accessdate=December 30, 2015|language=en|chapter=Chapter XI: The Oneida River Improvement}}

The river is utilized for boating and shipping as part of the New York State Barge Canal.