Stephen Charles Gunzenhauser (born April 8, 1942) is an American conductor of classical music. He was the music director of the Lancaster Symphony Orchestra for 40 years, retiring after the 2019–20 season. In 2005, he founded the Endless Mountain Music Festival, an annual summer music festival held in towns in Pennsylvania and New York. Gunzenhauser has recorded for Naxos and other labels. He is the 5th most recorded American conductor.