The Old Tolland County Court House is a historic former courthouse at 53 Tolland Green in Tolland, Connecticut. It is a wood frame structure two stories in height, which was built in 1822, and was used as a courthouse until 1892. It was used as a library for a number of years thereafter, and is now a museum operated by the Tolland Historical Society. The building was listed on the National Register of Historic Places in 1977.