Deer River (New Hampshire)

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

{{Infobox river

| name = Deer River

| name_native =

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| image = DeerRiverSilverLakeNH.jpg

| image_caption = The Deer River at New Hampshire Route 41 near Silver Lake

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| pushpin_map = New Hampshire#USA

| pushpin_map_size = 250 px

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| subdivision_type1 = Country

| subdivision_name1 = United States

| subdivision_type2 = State

| subdivision_name2 = New Hampshire

| subdivision_type3 = County

| subdivision_name3 = Carroll

| subdivision_type4 = Town

| subdivision_name4 = Madison

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| length = {{convert|2.6|mi|km|abbr=on}}

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| source1 = Confluence of Ham Brook and Salter Brook

| source1_location = Madison

| source1_coordinates= {{coord|43|54|30|N|71|11|39|W|type:river|display=inline}}

| source1_elevation = {{convert|610|ft|m|abbr=on}}

| mouth = Silver Lake

| mouth_location = Madison

| mouth_coordinates = {{coord|43|53|2|N|71|10|35|W|type:river|display=inline,title}}

| mouth_elevation = {{convert|468|ft|m|abbr=on}}

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The Deer River is a {{convert|2.6|mi|km|adj=mid|-long}}[http://www.granit.unh.edu New Hampshire GRANIT state geographic information system] stream in eastern New Hampshire in the United States. It is a tributary of Silver Lake, part of the Ossipee Lake / Saco River watershed leading to the Atlantic Ocean.

The Deer River lies entirely within the town of Madison, New Hampshire. It begins at a wetland where Ham Brook and Salter Brook join, then flows south through woodlands to the village of Silver Lake, where it enters the north end of Silver Lake, the water body.