Peleg Wadsworth (May 6, 1748 – Nov 12, 1829) was an American officer during the American Revolutionary War and a Congressman from Massachusetts representing the District of Maine. He was also grandfather of noted American poet Henry Wadsworth Longfellow. Wadsworth was born in Duxbury, Massachusetts, to Peleg and Susanna (Sampson) Wadsworth. He graduated from Harvard College with an A.B. (1769) and an A.M. (1772), and taught school for several years in Plymouth, Massachusetts, with his former classmate Alexander Scammel. There he met Elizabeth Bartlett (1753 to 1825), whom he married in 1772.