Roaring River is a tributary of Crabtree Creek in Linn County in the U.S. state of Oregon. It begins in the western foothills of the Cascade Range near Snow Peak. From there it flows generally west to meet Crabtree Creek at Larwood Wayside Park, north of Lacomb, about 16 miles (26 km) upstream of where the creek meets the South Santiam River east of Albany. The only named tributary of Roaring River is Milky Fork, which enters from the left near Roaring River Park.