William Lockhart

William Lockhart may refer to:


 * William Lockhart of Lee (1621–1675), Oliver Cromwell's ambassador at Paris
 * William Lockhart (surgeon) (1811–1896), medical missionary and fellow of the Royal College of Surgeons
 * William Lockhart (priest) (1820–1892), English Roman Catholic priest, convert from Anglicanism
 * Sir William Lockhart (Indian Army officer) (1841–1900), British Indian Army general
 * William Ewart Lockhart (1846–1900), Scottish Victorian painter
 * William Mustart Lockhart (1855–1941), Scottish topographical painter
 * William Thomas Lockhart (born 1839), Ontario merchant and political figure
 * William Lockhart (MP) (1787–1856), British member of parliament for Lanarkshire