Montoursville is a borough in Lycoming County, Pennsylvania, in the United States. As of the 2000 census, the borough population was 4,777. It is part of the Williamsport, Pennsylvania Metropolitan Statistical Area. The Williamsport Regional Airport is located in Montoursville.
Developed on the east bank of the river near the former native village of Otstonwakin, the borough is named for Andrew Montour, the French/Native American and son of Madame Montour. Madame Montour was a Native American interpreter and negotiator who was important in colonial history for her service to the British in New York and Pennsylvania. She was considered the leader of the native village. Her son Andrew Montour also became influential as an interpreter and negotiator, serving colonial governments in Pennsylvania and Virginia, including during the French and Indian War.