Thomas Grantham may refer to: Sir Thomas Grantham (merchant) (1641–1718), English tobacco trader and naval officer Thomas Grantham (died 1592), member of parliament (MP) for Great Grimsby (UK Parliament constituency) Thomas Grantham (died 1558), MP for Lincoln Sir Thomas Grantham (died 1630), MP for Lincoln, and for Lincolnshire Thomas Grantham (Parliamentarian) (1612–1655), his son, MP for Lincoln Thomas Grantham (Baptist) (1634–1692), English minister