Harrington is a town in Washington County, Maine, United States.

Originally called Plantation Number 5, it was one of six townships east of the Union River granted in 1762 by the Massachusetts General Court to an association of petitioners.

[3] Farmers grew wheat and potatoes in the town's sandy loam.

[5] Gallison Memorial Library still operates a limited schedule in Harrington.

It is bordered by the towns of Milbridge to the west, Cherryfield to the northwest, Columbia to the north, and Addison to the east.

There were 675 housing units at an average density of 32.0 per square mile (12.4/km2).

24.1% of all households were made up of individuals, and 12.2% had someone living alone who was 65 years of age or older.

22.5% of all households were made up of individuals, and 10.2% had someone living alone who was 65 years of age or older.