Sir William Hamo Thornycroft RA (9 March 1850 – 18 December 1925) was an English sculptor, responsible for some of London's best-known statues, including the statue of Oliver Cromwell outside the Palace of Westminster. He was a keen student of classical sculpture and was one of the youngest artists to be elected to the Royal Academy, in 1882, the same year the bronze cast of Teucer was purchased for the British nation under the auspices of the Chantrey Bequest.