13th March » Cardinal Gregorio Conti is elected Antipope as Antipope Victor IV (1138) named Victor IV, succeeding Antipope Anacletus II called Anacletus II.
22nd August » Battle of the Standard between Scotland and England.
11th October » A 1138 Aleppo earthquake e.g massive earthquake strikes Aleppo, Syria.
5th November » Ly Anh Tong or Lý Anh Tông is enthroned as emperor of Vietnam at the age of two, beginning a 37-year reign.