John Digby may refer to:
- John Digby (died 1548) (1508–1548), MP for Leicestershire 1539, High Sheriff of Warwickshire and Leicestershire 1539–40
- John Digby, 1st Earl of Bristol (1580–1653)
- John Digby, 3rd Earl of Bristol (1634–1698), MP for Dorset 1675–1677
- John Digby (MP) (1618–1664), MP for Milborne Port in 1640
- John Digby (1668-1728), MP for Newark 1705-08 and MP for East Retford 1713–22