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 word caldwell:
“Without our being especially conscious of the transition, the word “parent” has gradually come to be used as much as a verb as a noun. Whereas we formerly thought mainly about “being a parent,” we now find ourselves talking about learning how “to parent.” . . . It suggests that we may now be concentrating on action rather than status, on what we do rather than what or who we are.”
—Bettye M. Caldwell (20th century)