Lord Grey may refer to:

  • Thomas Grey, Lord Grey of Groby (ca. 1623–1657), MP for Leicester during the English Long Parliament, supported the Parliamentary cause in the Civil War and was a regicide
  • Edward Grey, 1st Viscount Grey of Fallodon (1862–1933), British Foreign Secretary, 1905–1916
  • Baron Grey (disambiguation), the title of several different lines of the British peerage
  • Earl Grey, a title in the Peerage of the United Kingdom
  • Charles Grey, 2nd Earl Grey (1764–1845), British prime minister, 1830–1834

See also

  • Lord Gray, a title in the Peerage of Scotland
  • Lady Grey (disambiguation)