William Adam

William Adam may refer to:


 * William Adam (died c.1341), French archbishop and missionary
 * William Adam (architect) (1689–1748), Scottish architect, mason, and entrepreneur
 * William Adam of Blair Adam (1751–1839), Scottish Member of the British Parliament and judge
 * William Patrick Adam (1823–1881), British colonial administrator and Liberal politician
 * William Adam (minister) (1796–1881), Scottish Baptist minister, missionary, abolitionist
 * William Adam (artist) (1846–1931), English landscape artist who worked in California for 33 years
 * William Adam (malacologist) (1909–1988), Belgian malacologist
 * William Adam (trumpeter) (1917–2013), American trumpeter, and professor emeritus at Indiana University
 * William Augustus Adam (1865–1940), British and army officer and Conservative Party politician
 * Will Adam (born 1969), Archdeacon of Canterbury