Plattsburgh is a town in Clinton County, New York, United States.

The town is in the eastern part of the county, in the North Country region of the state of New York.

The village of Plattsburgh was incorporated within the town in 1815, then made a city in 1902.

The Battle of Plattsburgh was fought in 1814 on Lake Champlain during the War of 1812.

The Saranac River flows eastward through the town to Lake Champlain.

21.9% of all households were made up of individuals, and 7.9% had someone living alone who was 65 years of age or older.