William Caldwell may refer to:
- William Caldwell (cricketer) (1878–1964), English cricketer
- 'William Caldwell', field maple cultivar named for eponymous nurseryman
- William W. Caldwell (born 1925), U.S. federal judge
- William Caldwell (Halifax mayor), former mayor of Halifax, Nova Scotia
- William Caldwell (hymnist) (1801–1857), who compiled a hymn and tune book Union Harmony
- William Caldwell (ranger) (c. 1750–1822), Irish-Canadian soldier in the American Revolution and War of 1812
- William A. Caldwell (1906–1986), American journalist and columnist
- William B. Caldwell, American U.S. Army Lieutenant General
- William B. Caldwell (judge) (1808–1876), Ohio judge
- William Bletterman Caldwell (1798–1892), governor of the Red River Settlement
- William Clyde Caldwell (1843–1905), Ontario businessman and politician
- William Murray Caldwell (1832–1870), New Brunswick businessman and political figure
- William Parker Caldwell (1832–1903), member of the United States House of Representatives
- Billy Caldwell (1782–1841), Potawatomi leader
- Will Caldwell (born 1982), Australian rugby union player
- Bill Caldwell (racing driver), New Zealand racing driver
Famous quotes containing the words william and/or caldwell:
“Here lies the body of William Jones
Who all his life collected bones,
Till Death, that grim and boney spectre,
That universal bone collector,
Boned old Jones, so neat and tidy,
And here he lies, all bona fide.”
—Anonymous. “Epitaph on William Jones,” from Eleanor Broughton’s Varia (1925)
“The academic expectations for a child just beginning school are minimal. You want your child to come to preschool feeling happy, reasonably secure, and eager to explore and learn.”
—Bettye M. Caldwell (20th century)