For the district of Northern Cyprus, see Lefkoşa District.

Nicosia District is one of the six districts of Cyprus. Its main town is the island country's capital city, Nicosia. The TRNC-controlled northern part of the district is the Lefkoşa District of the unrecognized Turkish Republic of Northern Cyprus.

TRNC-controlled areas of the Larnaca District of the Republic of Cyprus are administered as part of Nicosia District, while western parts of the Nicosia District under TRNC control are administered as part of the new Güzelyurt District.