William Kennedy
William Kennedy is the name of the following people:
- William Kennedy (Politician, 1768) (1768–1834), American politician (North Carolina)
- William Kennedy (Politician, 1775) (1775–1826), American politician (New Jersey)
- William Kennedy (naval officer) (1814–1890), Canadian-British naval officer and polar explorer
- William Kennedy (politician, 1854) (1854-1918), American politician (Connecticut)
- William Kennedy (Author) (born 1928), American writer and screenwriter
- William Kennedy (drummer) (born 1957), American jazz drummer
- William James Kennedy (* 1943), British paleontologist and geologist
- William Quarrier Kennedy (1903–1979), British geologist and petrographer
- William R. Kennedy ( William Robert Kennedy ; * 1927), American neurologist