Taughannock Falls is a waterfall located in the town of Ulysses in Tompkins County, New York, United States. It is part of the Taughannock State Park and stands at a height of 215 feet (66 meters), making it the highest single-drop waterfall east of the Rocky Mountains. The waterfall is fed by Taughannock Creek, which flows into Cayuga Lake, one of the Finger Lakes of New York.

The name Taughannock is derived from the word taghkanic, which means "great fall in the woods" in the language of the native Iroquois people who inhabited the region. Taughannock Falls is surrounded by cliffs of sedimentary rock, which date back over 400 million years. Visitors to the falls can take a short hike along the Taughannock Gorge Trail to reach the base of the waterfall.

Aside from the falls, Taughannock State Park offers a variety of recreational activities, such as hiking, fishing, boating, camping, and swimming. The park covers an area of over 750 acres and features a number of scenic overlooks, picnic areas, and nature trails. The nearby town of Ithaca, home to Cornell University and Ithaca College, offers additional attractions such as museums, theaters, and restaurants.