Pennsylvania, officially the Commonwealth of Pennsylvania, is a state spanning the Mid-Atlantic, Northeastern, Appalachian, and Great Lakes regions of the United States. Pennsylvania borders Delaware to its southeast, Maryland to its south, West Virginia to its southwest, Ohio and the Ohio River to its west, Lake Erie and New York to its north, the Delaware River and New Jersey to its east, and the Canadian province of Ontario to its northwest.

Pennsylvania Dutch, sometimes referred to as Pennsylvania German, is a variation of Palatine German spoken by the Pennsylvania Dutch, including the Amish, Mennonites, Fancy Dutch, and other related groups in the United States and Canada. There are approximately 300,000 native speakers of Pennsylvania Dutch in the United States and Canada.