William Cary

William Cary may refer to:


 * William Cary (MP for Mitchell), represented Mitchell (UK Parliament constituency)
 * William J. Cary (1865–1934), U.S. Representative from Wisconsin
 * William L. Cary (1910–1983), Chairman of the U.S. Securities and Exchange Commission
 * William Dennison Cary (1808–1861), founder and namesake of Cary, Illinois
 * William Cary (instrument maker) (1759–1825), English maker of scientific instruments
 * William Cary (1437–1471), gentry; beheaded after Battle of Tewkesbury
 * W. Sterling Cary (1927–2021), American Christian minister