The Little North Santiam River is a 27-mile (43 km) tributary of the North Santiam River in western Oregon in the United States. It drains 113 square miles (290 km2) of the Cascade Range on the eastern side of the Willamette Valley east of Salem. Named tributaries from source to mouth are Opal, Battle Ax, Gold, Horn, Tincup, Cold, Stack, Cedar, and Little Cedar creeks. Then come Dry, Henline, Evans, Fawn, Elkhorn, Fish, Sinker, Moorehouse, and Big creeks. Further downstream are Cougar, Bear, Canyon, Kiel, Beaver, Jeeter, Cox, and Polly creeks.