Transnistria is a region in Eastern Europe that is under the effective control of the Russian-backed Pridnestrovian Moldovan Republic but is recognized by the international community as an administrative unit of Moldova, the Administrative-Territorial Units of the Left Bank of the Dniester. The flag of the Prinestrovian Moldovan Republic is a red-green-red triband, while the Administrative-Territorial Units of the Left Bank of the Dniester use the flag of Moldova.

Transnistria, officially known as the Pridnestrovian Moldovan Republic (PMR), is a breakaway state internationally recognized as part of Moldova. Transnistria controls most of the narrow strip of land between the Dniester river and the Moldova–Ukraine border, as well as some land on the other side of the river's bank. Its capital and largest city is Tiraspol. Transnistria is officially designated by the Republic of Moldova as the Administrative-Territorial Units of the Left Bank of the Dniester or as Stînga Nistrului.