Chapman Creek is a tributary of the Susquehanna River in Snyder County, Pennsylvania, in the United States.

The creek then turns south-southeast for a few tenths of a mile, entering the census-designated place of Port Trevorton and receiving another unnamed tributary from the left.

It then meanders in the same direction for a few tenths of a mile before reaching its confluence with the Susquehanna River.

[1] Chapman Creek joins the Susquehanna River 110.34 miles (177.58 km) upstream of its mouth.

[5] Chapman Creek was entered into the Geographic Names Information System on August 2, 1979.

[3] The Pennsylvania Department of Transportation once applied for a Water Obstruction and Encroachment permit to replace a reinforced concrete I-beam bridge carrying State Route 2013 over Chapman Creek with a reinforced concrete box culvert bridge 20 feet (6.1 m) wide and 7 feet (2.1 m) high.