| Clear Stream | |
| Pushpin Map: | New Hampshire#USA |
| Pushpin Map Size: | 250 px |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
| Subdivision Type2: | State |
| Subdivision Name2: | New Hampshire |
| Subdivision Type3: | County |
| Subdivision Name3: | Coos |
| Subdivision Type4: | Towns & townships |
| Subdivision Name4: | Dixville, Millsfield, Errol |
| Length: | 11.8miles |
| Source1: | Juncture of Cascade Brook and Flume Brook |
| Source1 Location: | Dixville Notch |
| Source1 Coordinates: | 44.8467°N -71.2783°W |
| Source1 Elevation: | 1430feet |
| Mouth: | Androscoggin River |
| Mouth Location: | Errol |
| Mouth Coordinates: | 44.7775°N -71.1358°W |
| Mouth Elevation: | 1215feet |
| Tributaries Left: | Welch Brook, Corser Brook |
| Tributaries Right: | West Branch Clear Stream, Millsfield Pond Brook |
Clear Stream is an 11.8adj=midNaNadj=mid[1] river in northern New Hampshire in the United States. It is a tributary of the Androscoggin River, which flows south and east into Maine, joining the Kennebec River near the Atlantic Ocean.
Clear Stream flows out of Dixville Notch, a dramatic gap through the mountains of northern New Hampshire. The stream is formed by the juncture of Cascade Brook and Flume Brook. The stream flows southeast through the townships of Dixville and Millsfield before joining the Androscoggin River in the town of Errol. New Hampshire Route 26 follows the stream for its entire length.