Hornby is a surname. Notable people with the surname include:
A. N. Hornby (1847–1925), English sportsman excelling in both rugby and cricketA. S. Hornby (1898–1978), English grammarian, lexicographer, and pioneer in the field of English language learning and teaching (ELT)Andy Hornby (born 1967), English businessman, chief executive of Alliance BootsAnna Hornby, N.E.A.C (1914–1996), English painter, calligrapher and member of the New English Art ClubBen Hornby (born 1980), Australian rugby league playerClive Hornby (1944–2008), English actorD. Brock Hornby (born 1944), United States federal judgeSir Edmund Grimani Hornby (1825-1896), Chief Judge of the British Supreme Consular Court in Constantinople and the British Supreme Court for China and JapanEdmund Phipps-Hornby VC, CB, CMG, DL (1857–1947), English recipient of the Victoria CrossEdward Kenworthy Hornby (1839–1887), Member of Parliament for BlackburnFrank Hornby (1863–1936), inventor of Meccano and Hornby TrainsGeoffrey Thomas Phipps Hornby (1825–1895), British admiral of the fleetHugh Leycester Hornby (1888–1965), Anglican clergymanJames John Hornby (1826–1909), headmaster and, later, provost of EtonJohn Hornby (1880–1927), Canadian explorerLesley Hornby (born 1949), birth name of English model, actress, and singer better known as "Twiggy"Nick Hornby (born 1957), authorNick Hornby (artist) (born 1980), British artistPhil Hornby, British news reporter, working for ITV MeridianPhipps Hornby (1785–1867), British naval officerPhipps Hornby (cricketer) (1820–1848), English cricketerRichard Hornby (1922–2007), British Conservative Party politician and businessmanRobert William Bilton Hornby (1821–1888), priest, antiquarian and lord of the manor from the City of YorkRon Hornby (1914–1962), a British professional footballerRoss Hornby, Canada's current Ambassador Extraordinary and Plenipotentiary to the European UnionWarwick Hornby, Australian musician in the band The WhitlamsWilfrid Bird Hornby (born 1851), an Anglican Colonial BishopWilliam Hornby (governor) (c. 1723–1803), Governor of BombaySir William Hornby, 1st Baronet (1841–1928), son of William Henry Hornby, also an industrialist and politicianWilliam Henry Hornby (1805–1884) (1805–1884), English industrialist and politician