Gagauzia or Gagauz-Yeri, officially the Autonomous Territorial Unit of Gagauzia (ATUG), is an autonomous territorial unit of Moldova. Its autonomy is ethnically motivated by the predominance in the region of the Gagauz people, who are primarily Orthodox Turkic-speaking people.

At the end of World War I, all of the territory of Gagauzia became part of the Kingdom of Romania, before being carved up into the Soviet Union in June 1940. From 1941 to 1944 it was again part of Romania, after which it was incorporated into the Moldavian Soviet Socialist Republic. As the Soviet Union began to disintegrate, Gagauzia declared independence in 1990 as the Gagauz Republic, but was integrated into Moldova in 1994.

Gagauz Yeri literally means "place of the Gagauz".