Metropolis in Asia is both a Roman era city and a vacant titular see located in the ecumenical Province of Asia, in what is today Tratsa, Turkey (near Tatarlı) and Haydarlı

The colonia (Roman city), also called Pisidian Nikopolis, had its own Geurisia Council and at times minted its own coins.
It is probable that Metropolis was founded as a Hellenistic colony, as many names on inscriptions in the city have Macedonian names. The City was mentioned by Livy and Strabo.