Sunday River is a ski resort located in Newry, Maine, in the United States. It is one of Maine's largest and most visited ski resorts. Its vertical drop of 2,340 feet (710 m) is the second largest in Maine and the sixth largest in New England. Sunday River has the most terrain among the East Coast skiing destinations, including eight different peaks. The resort features 135 trails across eight interconnected mountain peaks, and is serviced by a network of 18 lifts.

Newry is a resort town in Oxford County, Maine, United States. The town’s year-round population was 411 at the 2020 census. The town is best known as the home of Sunday River Ski Resort and has a proportionately large seasonal (winter) population. Newry was also the site of one of Maine's worst Cold War aircraft crashes.