Muncy is a borough in Lycoming County, Pennsylvania, in the United States. The name Muncy comes from the Munsee Indians who once lived in the area. The population was 2,663 at the 2000 census. It is part of the Williamsport, Pennsylvania Metropolitan Statistical Area. Muncy is located on the West Branch Susquehanna River, just south of the Confluence of Muncy Creek with the river.
Muncy's high school American football team and that of its rival, the Montgomery's high school team, play annually for The Shoe. The trophy was created in 1961 from an old athletic shoe found in the Muncy High School locker room; the shoe has been bronzed and mounted on a wooden box. Muncy currently leads the series with 28 wins to Montgomery's 18. Hughesville's high school team and Muncy are also rivals. In the first game of the season, September 4, 2010, Muncy kept the shoe by shutting out Montgomery 52-0. The Muncy Historic District was added to the National Register of Historic Places in 1980.