William Preston
William Preston is the name of the following people:
- William Preston (captain) , British captain
- William Preston (Politician, 1816) (1816-1887), American politician and officer (Kentucky)
- William Preston (politician, 1874) (1874–1941), British politician
- William B. Preston (1805–1862), American politician
- William C. Preston (1794–1860), American politician
- William Everett Preston (1946-2006), American musician, see Billy Preston