Allason is a surname. Notable people with the surname include:
James Allason OBE (1912–2011), British Conservative Party politician, sportsman, and former military planner who worked with Mountbatten and ChurchillRupert Allason (born 1951), military historian and former Conservative Party politician in the United KingdomThomas Allason (1790–1852), English architect, surveyor and landscaper, noted for his work at Connaught Square and the Ladbroke Estate in KensingtonTom Allason founder of Ecourier, UK courier service