Nicosia (also known as Lefkosia in Greek and Lefkoşa in Turkish) is the capital and largest city of Cyprus. It is the southeasternmost of all EU member states' capital cities.

Nicosia has been continuously inhabited for over 4,500 years and has been the capital of Cyprus since the 10th century. It is the last divided capital in Europe; three years after Cyprus gained independence from British rule in 1960, the Bloody Christmas conflict between Greek Cypriots and Turkish Cypriots triggered island-wide intercommunal violence, and Nicosia's Greek Cypriot and Turkish Cypriot communities segregated into its south and north respectively in 1964. A decade later, Turkey invaded Cyprus following Greece's successful attempt to take over the island. The leaders of the takeover would later step down, but the dividing line running through Nicosia (and the rest of the island, interrupted only briefly by British military bases) became a demilitarised zone that remains under the control of Cyprus while heavily policed by the United Nations; it is now known as the United Nations Buffer Zone in Cyprus between the Republic of Cyprus, which is internationally recognised, and Northern Cyprus, which is recognised only by Turkey. The ongoing dispute between the two communities is known as the Cyprus problem.

Apart from its legislative and administrative functions, Nicosia has established itself as the island's financial capital and its main international business center. In 2018, Nicosia was the 32nd richest city in the world in relative purchasing power.