Licking Run is a tributary of Beaver Run in Richland Township and Quakertown in Bucks County, Pennsylvania in the United States.
Licking Run rises with two branches in Richland Township at an elevation of , just east of Pennsylvania Route 309 (North West End Boulevard) which are south oriented for about a mile and join just west of Quakertown where the main branch turns east, picks up another branch from the left and continues through town. It passes along the south side of Memorial Park in Quakertown. At the east end of the Borough, it turns to the south where it meets its confluence with Beaver Run (at Beaver Run's 0.82 river mile) at an elevation of , which results in an average slope of 32.74 feet per mile (5.55 meters per kilometer).
Beaver Run lies in the Brunswick Formation, a sedimentary rock laid down during the Jurassic and the Triassic, consisting of mudstone, siltstone, and green, brown, and reddish-brown shale. Mineralogy includes argillite and hornfels.