Second Tompkins County Courthouse, also known as Old Courthouse, is a historic courthouse located at Ithaca in Tompkins County, New York. It is a two story, 57 feet by 75 feet rectangular building with a three story tower. The building is built of red brick, covered with stucco, over a stone foundation. The tower contains a belfry with a pointed arch opening on each of the four sides. It was built in 1854 and has a notable open timber roof. It was listed on the National Register of Historic Places in 1971.