Alfred Newton FRS (11 June 1829 – 7 June 1907) was an English zoologist and ornithologist. Newton was Professor of Comparative Anatomy at Cambridge University from 1866 to 1907. Among his numerous publications were a four-volume Dictionary of Birds (1893–6), entries on ornithology in the Encyclopaedia Britannica (9th edition) while also an editor of the journal Ibis from 1865 to 1870. In 1900 he was awarded the Royal Medal of the Royal Society and the Gold Medal of the Linnaean Society.