John Fitzgibbon may refer to:
- John FitzGibbon, 1st Earl of Clare (1748–1802), Attorney-General and Lord Chancellor of Ireland
- John FitzGibbon, 2nd Earl of Clare (1792–1851), Privy Councillor and Governor of Bombay
- John Fitzgibbon (hurler) (born 1967), Irish hurler
- John Fitzgibbon (politician), United Kingdom Member of Parliament for South Mayo (1910–1918)
- John Fitzgibbons (1868–1941), U.S. Representative from New York