William Lithgow
William Lithgow is the name of the following people:
- William Lithgow (writer) (1582 / 1583–1645), Scottish traveler, writer and alleged spy
- William Lithgow (Judge) (1715–1798), American judge
- William Lithgow (Colonial Clerk) (1784–1864), Scottish clergyman and colonial clerk
- William Lithgow (industrialist) (born 1934), Scottish industrialist