Ash Creek is a short stream in Polk County, in the U.S. state of Oregon.

Formed by the merger of its north and middle forks near Monmouth, it flows generally east to meet the Willamette River at Independence.

The creek's mouth is about 95 miles (153 km) upstream of the Willamette's confluence with the Columbia River.

[4] Both forks pass under Oregon Route 99W shortly before they merge to form the main stem.

European-Americans drained and leveled wetlands and riparian zones for farming, logging, housing, and urban development.