The title of this article is ambiguous. For other meanings, see Kiev (disambiguation).

Kiev (Ukrainian Київ Kyiv [ˈkɪjɪu̯]; Russian Киев Kiev [ˈkʲi(ɪ̯)ɪf]) is the capital and largest city of Ukraine, as well as the administrative seat of Kiev Oblast and Kiev-Svyatoshyn Rajon. It is located on the Dnieper River, navigable up to this point for smaller seagoing vessels, and has a population of nearly 3 million in an area of 847.66 km². The agglomeration comprises more than four million inhabitants.

Kiev is considered an important educational and industrial centre and is also the country's most important transport hub. Due to its historical significance as the centre of Kievan Rus, the city has often been called the Mother of All Russian Cities, since the same name was used in the Nestor Chronicles. Because of its many churches and monasteries and its importance for Orthodox Christianity, Kiev has also been called the Jerusalem of the East since the Middle Ages. After the end of World War II, Kiev received the distinction of a Hero City. The asteroid (2171) Kiev, discovered on August 28, 1973 by T. M. Smirnova at the Crimean Observatory, was named after the city, as was a peninsula in Antarctica in 2010.