Penn Township is a township in Centre County, Pennsylvania, United States and was established in 1844.The population was 1,203 at the 2020 census. The township has a total area of 28.4 square miles. Road Mileage is 16.28.

Penn Township is bordered by Miles Township to the north, Haines Township to the east, Mifflin County to the south and Gregg Township to the west and north. The township also surrounds the separate borough of Millheim and is part of the Penns Valley region of Centre County. Poe Valley State Park is in Penn Township and Bald Eagle State Forest has a total area of 5364.65 ac.

Poe Valley State Park and nearby Poe Paddy State Park were built by the Civilian Conservation Corps during the Great Depression of the 1930s.They constructed roads throughout the forests, built state park facilities, constructed bridges on the state roads. The Lake is a man-made lake covering 25 acres.