Otsego County Courthouse is a historic courthouse building in Cooperstown, Otsego County, New York. It is a 2 1/2-story, brick-and-stone structure on a foundation of coursed ashlar. It was designed by Archimedes Russell (1840–1915) and built in 1880. It features a gable roof, projecting pavilions, and a tower with supporting pavilion and overhanging top stage. The front facade of the building is dominated by a large stained glass window. It was listed on the National Register of Historic Places in 1972.