Gregory VI

Gregory VI may refer to:


 * Pope Gregory VI, John Gratian, elected 1045; abdicated at the Council of Sutri in 1046; died 1048
 * Antipope Gregory VI, first to claim to be pope as successor to Sergius IV
 * Gregory VI of Cilicia aka Gregory VI Apirat or Grigor VI Apirat, catholicos of the Armenian Church
 * Ecumenical Patriarch Gregory VI of Constantinople (1798–1881), Georgios Fourtouniadis, reigned 1835–1840 and 1867–1871