The Acra (or Akra, Hebrew: חקרא or חקרה‎, Greek: Aκρα), was a fortified compound in Jerusalem built by Antiochus Epiphanes, ruler of the Seleucid Empire, following his sack of the city in 168 BCE. The fortress played a significant role in the events surrounding the Maccabean Revolt and the formation of the Hasmonean Kingdom.