Chersonesus Taurica (Greek: Χερσόνησος, Chersonēsos; Latin: Chersonesus; Byzantine Greek: Χερσών; Old East Slavic: Корсунь, Korsun; Ukrainian and Russian: Херсонес, Khersones; also transliterated as Chersonese, Chersonesos, Cherson) is an ancient Greek colony founded approximately 2,500 years ago in the southwestern part of Crimea, known then as Taurica. The colony was established in the 6th century BC by settlers from Heraclea Pontica.

The ancient city is located on the shore of the Black Sea at the outskirts of Sevastopol on the Crimean Peninsula of Ukraine, where it is referred to as Khersones. It has been nicknamed the "Ukrainian Pompeii" and "Russian Troy". The site is now part of the National Historical-Archeological Museum-Zapovednik of the Ukrainian Khersones Tavriysky. The name "Chersonesos" in Greek means "peninsula", and aptly describes the site on which the colony was established. It should not be confused with the Tauric Chersonese, the name often applied to the whole of the southern Crimea along with Taurica.