Greater Napanee is a town in southeastern Ontario, Canada, approximately 45 kilometres (28 mi) west of Kingston and the county seat of Lennox and Addington County. It is located on the eastern end of the Bay of Quinte. Greater Napanee municipality was created by amalgamating the old Town of Napanee with the townships of Adolphustown, North and South Fredericksburg, and Richmond in 1999. Greater Napanee is co-extensive with the original Lennox County.

Eastern Ontario is a secondary region of Southern Ontario in the Canadian province of Ontario which lies in a wedge-shaped area between the Ottawa River and St. Lawrence River. It shares water boundaries with Quebec to the north and New York State to the east and south, as well as a small land boundary with the Vaudreuil-Soulanges region of Quebec to the east.