Wadsworth Hall, also known as the Peleg Wadsworth House, is a historic house at the end of Douglas Road in Hiram, Maine, United States. A massive structure for a rural setting, it was built for General Peleg Wadsworth between 1800 and 1807 on a large tract of land granted to him for his service in the American Revolutionary War. Wadsworth was the leading citizen of Hiram, and important town meetings took place at the house. He was also the grandfather of poet Henry Wadsworth Longfellow, who visited the estate as a youth. The house remains in the hands of Wadsworth descendants. The house was listed on the National Register of Historic Places in 1974.