Names of Istanbul
Byzantium (Greek: , Byzántion) is the first known name of the city. Around 660 BC, Greek settlers from the city-state of Megara founded a Doric colony on the present-day Istanbul, and named the new colony after their king, Byzas. After Constantine I (Constantine the Great) made the city the new eastern capital of the Roman Empire in 330 AD, the city became widely known as Constantinopolis or Constantinople, which, as the Latinised form of "" (Knstantinoúpolis), means the "City of Constantine". He also attempted to promote the name Nea Roma ("New Rome"), but this never caught onConstantinople remained the official name of the city throughout the Byzantine period, and the most common name used for it in the West until the establishment of the Republic of Turkey.
By the 19th century, the city had acquired a number of names used by either foreigners or Turks.