Exeter is a town in Otsego County, New York, United States.

It is named after the county town and cathedral city of Exeter in England.

The eastern town line borders, in part, Canadarago Lake.

New York State Route 28 is a north-south highway near the eastern town line, and New York State Route 51 is a north-south highway near the western town line.

20.4% of all households were made up of individuals, and 11.0% had someone living alone who was 65 years of age or older.