William Cecil may refer to:
- Lord William Cecil (courtier) (1854–1943), British royal courtier
- Lord William Cecil (bishop) (1863–1936), Bishop of Exeter, 1916–1936
- William Cecil, 1st Baron Burghley (1520–1598), English politician and advisor to Elizabeth I
- William Cecil, 2nd Earl of Exeter (1566–1640), Knight of the Garter
- William Cecil, 2nd Earl of Salisbury (1591–1668), Knight of the Garter
- William Cecil, 3rd Marquess of Exeter (1825–1895), member of the Privy Council of the United Kingdom
- William Cecil, 5th Marquess of Exeter (1876–1956), recipient of the Territorial Decoration
- William Cecil, 7th Marquess of Exeter (1909–1988), son of William Cecil, 5th Marquess of Exeter
- William Cecil, 17th Baron de Ros (1590–1618), Baron in the Peerage of England
- William Cecil Ross (1911–1998), politician in Manitoba, Canada
- William Cecil Slingsby (1849–1929), English mountain climber and alpine explorer
Famous quotes containing the word william:
“The Heavens. Once an object of superstition, awe and fear. Now a vast region for growing knowledge. The distance of Venus, the atmosphere of Mars, the size of Jupiter, and the speed of Mercury. All this and more we know. But their greatest mystery the heavens have kept a secret. What sort of life, if any, inhabits these other planets? Human life, like ours? Or life extremely lower in the scale. Or dangerously higher.”
—Richard Blake, and William Cameron Menzies. Narrator, Invaders from Mars, at the opening of the movie (1953)