William Daniel may refer to:

• William Daniel (bishop) (died 1628), Church of Ireland archbishop
• William Daniel (judge) (1806–1873), Virginia jurist
• William Daniel (Maryland politician) (1826–1897), American politician
• William Daniel (died 1633), English Member of Parliament for Truro, 1601
• William B. Daniel (1840–1921), American politician in the Virginia House of Delegates
• William Barker Daniel (1754–1833), Church of England clergyman and writer on field sports
• William D. S. Daniel (1903–1988), Assyrian author, poet and musician
• Willie Daniel (1937–2015), American football player
• William Chase Daniel (born 1986), American former football quarterback

• Bill Daniel (disambiguation)
• William Daniell (disambiguation)
• All pages with titles beginning with William Daniel
• William Daniels (disambiguation)