Yevpatoria or Eupatoria (Ukrainian: Євпато́рія, Yevpatoriya, Russian: Евпато́рия, Yevpatoriya, Crimean Tatar: Kezlev, Greek: Ευπατορία, Κερκινίτις - Eupatoria, Kerkinitis, Turkish: Gözleve, Armenian: Եվպատորիա - Yevpatoria) is a city in Crimea, Ukraine.

The first recorded settlement in the area, called Kerkinitis (Κερκινίτης), was built by Greek colonists around 500 BC. Along with the rest of Crimea, Kerkinitis was part of the dominions of Mithridates VI, King of Pontus, from whose cognomen, Eupator, the city's modern name derives.

From roughly the 7th through the 10th centuries AD Yevpatoriya was a Khazar settlement; its name in Khazar language was probably Güzliev (literally "beautiful house"). It was later subject to the Cumans (Kipchaks), the Mongols and the Crimean Khanate. During this period the city was called Kezlev by Crimean Tatars and Gözleve by Ottomans. The Russian medieval name Kozlov is a Russification of the Crimean Tatar name.

For a short period between 1478 and 1485, the city was administrated by the Ottoman Empire. Afterwards it became an important urban center of the Crimean Khanate. In 1783, with the whole Crimea, Kezlev was captured by the Russian Empire. Its name was officially changed to Evpatoriya("Евпатория"- city named after Eupator Dionysius ) in 1784. The city was briefly occupied in 1854 by British, French and Turkish troops during the Crimean War, when it was the site of the Battle of Eupatoria. Adam Mickiewicz visited the town in 1825 and wrote one of his Crimean Sonnets here; it was later translated into Russian by Mikhail Lermontov.