William Crozier

William Crozier may refer to:
 * William Crozier (artillerist) (1855–1942), American general, artillerist and inventor
 * William Crozier (Scottish artist) (1893–1930)
 * William Crozier (Irish artist) (1930–2011)
 * William Crozier (cricketer) (1873–1916), Irish cricketer
 * William Percival Crozier (1879–1944), British journalist and editor
 * William Crozier (1839–1906), son and heir of John Crozier, South Australian pastoralist
 * William John Crozier (1892–1955), American physiologist