John O'Neill

• B. H. St. John O’Neill
• Jack O'Neill (disambiguation)
• John A. O'Neill
• John C. O'Neill
• John Johnston O'Neill
• John Joseph O'Neill (American politician)
• John Joseph O'Neill (British politician)
• John Joseph O'Neill (journalist)
• John O'Neal (disambiguation)
• John O'Neil (disambiguation)
• John O'Neill (Australian rules footballer)
• John O'Neill (Canadian politician)
• John O'Neill (Fenian)
• John O'Neill (Irish senator)
• John O'Neill (Tipperary hurler)
• John O'Neill (VC)
• John O'Neill (Wisconsin politician)
• John O'Neill (architect)
• John O'Neill (baseball)
• John O'Neill (congressman)
• John O'Neill (editor)
• John O'Neill (field hockey)
• John O'Neill (footballer, born 1935)
• John O'Neill (footballer, born 1958)
• John O'Neill (footballer, born 1974)
• John O'Neill (guitarist)
• John O'Neill (musician)
• John O'Neill (philosopher)
• John O'Neill (poet)
• John O'Neill (political activist)
• John O'Neill (rugby league)
• John O'Neill (sport administrator)
• John O'Neill (video game designer)
• John O'Neill, 1st Viscount O'Neill
• John O'Neill, 3rd Earl of Tyrone
• John O'Neill, 3rd Viscount O'Neill
• John P. O'Neill
• John Raymond O'Neill
• John S. O'Neill
• St John O'Neill
• St Peter's Cathedral, Belfast