Greek Crimea concerns the ancient Greek settlements on the Crimean Peninsula. Greek city-states first established colonies along the Black Sea coast of Crimea in the 7th or 6th century BC. Several colonies were established in the vicinity of the Kerch Strait, then known as the Cimmerian Bosporus. The density of colonies around the Cimmerian Bosporus was unusual for Greek colonization and reflected the importance of the area. The majority of these colonies were established by Ionians from the city of Miletus in Asia Minor. By the mid-1st century BC the Bosporan Kingdom became a client state of the late Roman Republic, ushering in the era of Roman Crimea during the Roman Empire.

Crimea is a peninsula in Eastern Europe, on the northern coast of the Black Sea, almost entirely surrounded by the Black Sea and the smaller Sea of Azov. The Isthmus of Perekop connects the peninsula to Kherson Oblast in mainland Ukraine. To the east, the Crimean Bridge, constructed in 2018, spans the Strait of Kerch, linking the peninsula with Krasnodar Krai in Russia. The Arabat Spit, located to the northeast, is a narrow strip of land that separates the Syvash lagoons from the Sea of Azov. Across the Black Sea to the west lies Romania and to the south is Turkey. The largest city is Sevastopol. The region has a population of 2.4 million, and has been under Russian occupation since 2014.