Koufonisia
| Koufonisia Κουφονήσια | |
|---|---|
| Coordinates: 36°56′N 25°36′E / 36.933°N 25.600°E | |
| Country | Greece | 
| Administrative region | South Aegean | 
| Regional unit | Naxos | 
| Municipality | Naxos and Lesser Cyclades | 
| Area | |
| • Municipal unit | 26.025 km2 (10.048 sq mi) | 
| Highest elevation | 114 m (374 ft) | 
| Lowest elevation | 0 m (0 ft) | 
| Population  (2021) | |
| • Municipal unit | 391 | 
| • Municipal unit density | 15/km2 (39/sq mi) | 
| Time zone | UTC+2 (EET) | 
| • Summer (DST) | UTC+3 (EEST) | 
| Postal code | 843 00 | 
| Area code(s) | 22850 | 
| Vehicle registration | EM | 
| Website | http://www.koufonisia.gr/ | 
Koufonisia (Greek: Κουφονήσια) are a small island complex and a former community in the Cyclades, Greece. Since the 2011 local government reform it is part of the municipality Naxos and Lesser Cyclades, of which it is a municipal unit. The municipal unit has an area of 26.025 km2.