Gagauz is a Turkic language spoken by about 150,000 people in Moldova, Ukraine, Romania, Bulgaria, Greece, Turkey and Kazakhstan.
Gagauz was originally written with a version of the Greek alphabet. In 1957 the Cyrillic alphabet was adopted in Russia, Ukraine and Kazakhstan, and a version of the Latin alphabet based on the Turkish alphabet is used in Moldova, Bulgaria, Greece and Turkey
source
wikipedia.org,
omniglot.com,
evertype.com &
ethnologue.com