Sir John Shelton (1476/7 – 1539), courtier, of Shelton near Norwich, Norfolk, England, was, through his marriage, an uncle of Henry VIII's second wife, Anne Boleyn. Sir John was appointed comptroller of the joint household of the King's daughters, Mary and Elizabeth. Sir John and Lady Shelton (née Anne Boleyn, Sir Thomas Boleyn's sister) were also Governor and Governess to the King's children.
Sir John Shelton was the son of Sir Ralph Shelton (c. January 1431 – 16 July 1497) and Margaret Clere (d. 16 January 1500), daughter of Robert Clere, esquire, of Ormesby, Norfolk, and Elizabeth Uvedale, daughter of Thomas Uvedale, esquire. Sir John had four siblings: Ralph Shelton (died 1538), who married Mary Brome (d. 29 August 1540), Richard Shelton, a priest, Elizabeth Shelton, and Alice Shelton, who married John Heveningham. The family took its name from the Norfolk village of Shelton, and held lands in East Anglia, including Shelton Hall, for three centuries before Sir John's birth.
Before 1503, he married Anne Boleyn (18 November 1475 – 8 Jan 1556), daughter of Sir William Boleyn of Blickling, Norfolk, and Lady Margaret Butler, daughter of Thomas Butler, 7th Earl of Ormond, and Joan de Beauchamp. Sir John was appointed High Sheriff of Norfolk and Suffolk in 1504 and 1522, and was a Justice of the Peace for Norfolk. At the coronation of Henry VIII, Sir John was created a Knight of the Bath.