Josiah Quincy III (/ˈkwɪnzi/; February 4, 1772 – July 1, 1864) was an American educator and political figure. He was a member of the U.S. House of Representatives (1805–1813), mayor of Boston (1823–1828), and President of Harvard University (1829–1845). The historic Quincy Market in downtown Boston is named in his honor.