William Flynn
William Flynn may refer to:
- William J. Flynn (1867–1928), director of the Bureau of Investigation, 1919–1921
- William K. Flynn (died 1958), American football coach
- William S. Flynn (1885–1966), Governor of Rhode Island, 1923–1925
- William Flynn (golfer) (1890–1945), golf course architect
- Bill Flynn (1948–2007), South African film and theater actor and comedian
- Bill Flynn (Australian politician) (born 1951), former Queensland MP and leader of One Nation
- Billy Flynn (musician) (born August 11, 1956), American Chicago blues guitarist
- William "Bill" Flynn, responsible for the murder of Gregory Smart, the husband of Pamela Smart
- Fictional characters
- See also