Fitzroy or FitzRoy is an Anglo-Norman name originally meaning " son of the king" - it usually refers to a bastard son of the king, or a descendant thereof. It may refer to:

People:

• Matilda FitzRoy, daughter of Henry I and Isabel de Beaumont.
• Henry Fitzroy, 1st Duke of Richmond and Somerset (1519–1536), son of Henry VIII and Elizabeth Blount.
• Henry FitzRoy, 1st Duke of Grafton (1663–1690), son of Charles II and Barbara Palmer, 1st Duchess of Cleveland.
• George FitzRoy, 1st Duke of Northumberland (1665–1716), son of Charles II and Barbara Palmer.
• Charles FitzRoy, 2nd Duke of Cleveland (1662–1730), son of Charles II and Barbara Palmer.
• Barbara Fitzroy (1672–1731), youngest daughter of Barbara Palmer.
• Charles FitzRoy, 2nd Duke of Grafton (1683–1757), Irish and English politician.
• Augustus FitzRoy, 3rd Duke of Grafton (1735–1811), British Prime Minister.
• Charles Augustus FitzRoy (1796–1858), British military officer and Governor of New South Wales.
• Robert FitzRoy (1805–1865), British naval officer, captain of HMS Beagle, meteorologist, surveyor, hydrographer, and Governor of New Zealand.

Places and things:

• Fitzroy, a sea inlet East Falkland Falkland islands
• Fitzroy, Victoria, a suburb of Melbourne.
• Fitzroy, South Australia, a suburb of Adelaide.
• Fitzroy River, Queensland, in Central Queensland.
• Fitzroy Island National Park, Queensland, Australia.
• Fitzroy Football Club, a former Australian rules football team.
• Mount Fitzroy, a name for Cerro Chaltén in Argentina.
• FitzRoy, a sea area in the British Shipping Forecast.

Fictional characters:

• Trevor Fitzroy, a Marvel Comics and X-Men villain.