Wills Creek is a tributary of the Muskingum River, 92.2 mi (148.4 km) long, in eastern Ohio in the United States.

"[2] Wills Creek is formed by a confluence of short forks near Pleasant City in southern Guernsey County,[5] and initially flows northwardly through Byesville, Cambridge and Kimbolton.

[7] On January 16, 2005, the Wills Creek Dam 40°09′22″N 81°50′51″W / 40.15611°N 81.84750°W / 40.15611; -81.84750 became the only dam in the Army Corps of Engineers Huntington District's history (established 1938) to reach its spillway elevation and have water flow uncontrolled over the top of the spillway.

This extreme event was caused by an average of 5 to 8 inches (130 to 200 mm) of rain falling over Central Indiana and Ohio during January 4–14, 2005.

This rain combined with snow melt and saturated ground to produce record breaking runoff.