William Addison

William Addison may refer to:


 * William Addison (physician) (1803–1881), British physician
 * William Addison (VC) (1883–1962), holder of the Victoria Cross
 * William Addison, 4th Viscount Addison (born 1945), British Conservative peer
 * William Addison (chess player) (1933–2008), American chess master
 * William Wilkinson Addison (1905–1992), English historian and jurist