The St John, later St John-Mildmay Baronetcy, of Farley in the County of Southampton, is a title in the Baronetage of Great Britain. It was created on 9 October 1772 for Paulet St John, Member of Parliament for Winchester and Hampshire. The second Baronet represented Hampshire in the House of Commons. The third Baronet was Member of Parliament for Westbury, Winchester and Hampshire. He married Jane, daughter of Carew Mildmay, and assumed the additional surname of Mildmay. The fourth Baronet sat as Member of Parliament for Winchester. The title became dormant in 1955 on the death of the tenth Baronet. In 1998 Walter John Hugh St John-Mildmay successfully proved his right to the title and became the eleventh Baronet.