Türkmenbaşy, formerly known as Krasnovodsk, Kyzyl-Su, and Shagadam, is a city in Balkan Province in western Turkmenistan, on the Türkmenbaşy Gulf of the Caspian Sea. It sits at an elevation of 27 metres. The population was 86,800, mostly ethnic Turkmens but also Russian, Armenian and Azeri minorities. As the terminus of the Trans-Caspian Railway and site of a major seaport on the Caspian, it is an important transportation center. The city is also the site of Turkmenistan's largest oil refining complex.

Balkan Region is the westernmost of the five regions of Turkmenistan. Clockwise from north it borders Kazakhstan, Uzbekistan (north); two provinces of Turkmenistan (east), Iran (south), and the Caspian Sea (west). The capital city is Balkanabat, formerly known as Nebit Dag. The region's boundaries are identical to those of the former Krasnovodsk Oblast', a Soviet-era province of the Turkmen Soviet Socialist Republic. This oblast was liquidated and restored repeatedly in the 20th century, concluding with its abolition in 1988. However, the administrative boundaries of the region were restored in 1991 when Balkan Region was established.