Hagia Sophia means either "Holy Wisdom" or "Saint Sophia" ( or Αγία Σοφία in Greek, Sancta Sophia in Latin, Ayasofya in Turkish). It is a reference to the attribute of "The Holy Wisdom of Jesus Christ", especially in Eastern Orthodox doctrine.
"Hagia Sophia" may also specifically refer to:
Churches (or former churches)
Hagia Sophia, the Church of the Holy Wisdom in Istanbul, Turkey (formerly Constantinople), now a museum
Hagia Sophia, Trabzon, a former church and mosque located in the city of Trabzon in the north-eastern part of Turkey
Hagia Sophia, the church in Iznik, Turkey (formerly Nicaea), where the Second Council of Nicaea met in 787, severely damaged by several earthquakes