Nicosia (IPA: /ˌnɪkəˈsiːə/, NIK-ə-SEE-ə), known locally as Lefkosia (Greek: Λευκωσία, Turkish: Lefkoşa), is the capital and largest city of both Cyprus and the Turkish Republic of Northern Cyprus. Located on the River Pedieos and situated almost in the centre of the island, it is the seat of government as well as the main business centre. Nicosia is the capital of the Nicosia District. Nicosia is designated a Beta World City - by the Globalization and World Cities Study Group and Network.

Following the intercommunal violence of the 1960s, the capital was divided between the island's Greek Cypriot and Turkish Cypriot communities in the south and north respectively. An attempted coup to unite the island with Greece in 1974 led to a Turkish invasion, leaving the capital divided since then, with Turkish Cypriots claiming the north as the capital of their own state, Turkish Republic of Northern Cyprus (TRNC) (recognised only by Turkey). On 3 April 2008, as part of efforts to reunify the island, a symbolic wall dividing the two communities at Ledra Street was opened. Nicosia retains the distinction of being the world's last divided capital.

South of the Green Line, the population of the city is 313,400 (late 2009), while a further 84,893 live in the north. Nicosia is important commercially with many shops, two modern shopping malls, restaurants and entertainment. The city is a trade centre and manufactures textiles, leather, pottery, plastic, and other products. Copper mines are nearby. Nicosia is the seat of the University of Cyprus (UCY) and four other universities.