Transnistria is an unrecognised state that unilaterally split from Moldova after the dissolution of the USSR and mostly consists of a narrow strip of land between the river Dniester and the territory of Ukraine. In English, Transnistria refers to itself as Pridnestrovie, a Russian-language equivalent of Transnistria. It is usually officially referred to in Moldova as the Left Bank of the Dniester (Romanian: Stînga Nistrului or Stânga Nistrului).

Transnistria may also refer to:

• Moldavian Soviet Socialist Republic, predecessor of modern Transnistria
• Transnistria Governorate, a governate of Romania during World War II
• Administrative-Territorial Units of the Left Bank of the Dniester, an administrative unit of the Republic of Moldova
• Transnistria conflict, an ongoing political conflict
  • Transnistria War, the most violent phase of the Transnistria conflict
• Prydnistrovya [ro; ru; uk], a village in the Ivano-Frankivsk Oblast in Ukraine