- Source: Lefki, Lasithi
Lefki (Greek: Λεύκη) is a former municipality in the Lasithi regional unit, eastern Crete, Greece. Since the 2011 local government reform it is part of the municipality Sitia, of which it is a municipal unit. The municipal unit has an area of 152.303 km2 (58.805 sq mi). Population 1,466 (2021). The seat of the municipality was in Ziros.