Kemptville is a community located in the Municipality of North Grenville in Eastern Ontario, Canada in the northernmost part of the United Counties of Leeds and Grenville. It is located approximately 56 km south of the downtown core of Ottawa and 2.5 to 3 km south of the Rideau River. The community can be accessed by Highway 416, also known as the Veterans Memorial Highway, which was completed in 1999, and from Leeds and Grenville Road 43.