The Church of St Acacius was an early Christian church in Constantinople (modern-day Istanbul, Turkey). It may have been dedicated to a military saint and martyr of the Diocletianic Persecution, Saint Acacius (d. 10 May 305), or it may have acquired its name from a comes Acacius, an official under the augustus Constantine the Great (r. 306–337).[1]
The Church of St Acacius was one of the earliest churches of Constantinople, the city which Constantine founded in 328 in the city of Byzantium after his and his son, the caesar Crispus's, victory at the Battle of Chrysopolis over the augustus Licinius. The church is known to have been associated with the name Acacius from the early 5th century at latest.[1]