Saint Sophia Cathedral in Kyiv, Ukraine, is an architectural monument of Kievan Rus'. The former cathedral is one of the city's best known landmarks and the first heritage site in Ukraine to be inscribed on the World Heritage List along with the Kyiv Cave Monastery complex. Aside from its main building, the cathedral includes an ensemble of supporting structures such as a bell tower and the House of Metropolitan. In 2011 the historic site was reassigned from the jurisdiction of the Ministry of Regional Development of Ukraine to the Ministry of Culture of Ukraine. One of the reasons for the move was that both Saint Sophia Cathedral and Kyiv Pechersk Lavra are recognized by the UNESCO World Heritage Program as one complex, while in Ukraine the two were governed by different government entities. It is currently a museum.

Kievan Rus', also known as Kyivan Rus', was a state and later an amalgam of principalities in Eastern and Northern Europe from the late 9th to the mid-13th century. The name was coined by Russian historians in the 19th century. Encompassing a variety of polities and peoples, including East Slavic, Norse, and Finnic, it was ruled by the Rurik dynasty, founded by the Varangian prince Rurik. The modern nations of Belarus, Russia, and Ukraine all claim Kievan Rus' as their cultural ancestor, with Belarus and Russia deriving their names from it, and the name Kievan Rus' derived from what is now the capital of Ukraine. At its greatest extent in the mid-11th century, Kievan Rus' stretched from the White Sea in the north to the Black Sea in the south and from the headwaters of the Vistula in the west to the Taman Peninsula in the east, uniting the East Slavic tribes.