William Adamson (disambiguation)

William Adamson (1863–1936) was a Scottish politician and chairman of the British Labour Party.

William Adamson may also refer to:
 * William Agar Adamson (1800–1868), Canadian clergyman and author
 * William Adamson (Wisconsin politician) (1834–1907), American politician
 * William C. Adamson (1854–1929), U.S. Representative from Georgia
 * William Adamson (Cannock MP) (1881–1945), British Labour politician
 * William Adamson (Australian politician) (1858–1924), member of the Victorian Parliament
 * Sir William Owen Campbell Adamson (1922–2000), British industrialist
 * William Adamson, character in Angels & Insects
 * William Stuart Adamson (1958–2001), Scottish guitarist, vocalist, and songwriter