Pohatcong Creek (also called the Pohatcong River) is a tributary of the Delaware River in northwestern New Jersey in the United States.
It rises in the mountains of eastern Warren County, west of Hackettstown. It flows southwest, in a valley along the northwestern side of the Pohatcong Mountain ridge, which separates its watershed from that of the Musconetcong River. It joins the Delaware in Pohatcong Township, approximately 5 miles (8 kilometers) south of Phillipsburg.
The name Pohatcong is said to have thought of a Munsee phrase — pohwihtukwung, or "at the rippling or lapping river".