| Little Willamette River | |
| Map Size: | 300 |
| Pushpin Map: | USA Oregon |
| Pushpin Map Size: | 300 |
| Pushpin Map Caption: | Location of the mouth of the Little Willamette River in Oregon |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
| Subdivision Type2: | State |
| Subdivision Name2: | Oregon |
| Subdivision Type4: | County |
| Subdivision Name4: | Linn |
| Length: | 3miles |
| Source1: | Wetlands west of Albany |
| Source1 Location: | Gravel pit near the Willamette River |
| Source1 Coordinates: | 44.6161°N -123.1769°W[1] |
| Source1 Elevation: | 199feet[2] |
| Mouth: | Willamette River |
| Mouth Location: | Bowers Rock State Park |
| Mouth Coordinates: | 44.6367°N -123.1511°W |
| Mouth Elevation: | 177feet |
The Little Willamette River is a minor tributary of the Willamette River in Linn County in the U.S. state of Oregon. It begins in a gravel pit slightly east of the main stem in a bend of the larger river west of Albany. Flowing generally northeast and roughly parallel to the main stem for about 3miles, it enters the Willamette about 121.5miles from the larger river's mouth on the Columbia River.[3]
Along its lower course, the Little Willamette flows through Bowers Rock State Park, a 568acres tract in a riparian forest.[4] The park, largely undeveloped, with primitive trails and no amenities, is part of the Willamette Greenway.[5] The only named tributary of the Little Willamette is Coon Creek, which enters from the left.[3]