William Hickey may refer to:
- William Hickey (memoirist) (1749–1830), English lawyer and author of a famous set of memoirs
- William Hickey (writer), also known as Martin Doyle (1787–1875), Irish philanthropist
- William Hickey (actor) (1927–1997), American actor
- William Hickey (columnist), pseudonymous byline for a column in the Daily Express