There have been four baronetcies created for persons with the surname St John, two in the Baronetage of England and two in the Baronetage of Great Britain. As of three of the creations are extant.
St John baronets, of Lydiard Tregoze (1611): see Viscount Bolingbroke St John baronets of Woodford (1660): see Baron St John of Bletso St John baronets of Longthorpe (1715) St John, later St-John Mildmay baronets, of Farley (1772): see St John-Mildmay baronets