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Metamorfosi Μεταμόρφωση  | 
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| Coordinates: 38°3′N 23°45′E / 38.050°N 23.750°ECoordinates: 38°3′N 23°45′E / 38.050°N 23.750°E | |
| Country | Greece | 
| Administrative region | Attica | 
| Regional unit | North Athens | 
| Government | |
| • Mayor | Miltiadis Karpetas (PASOK) | 
| Area | |
| • Municipality | 5.502 km2 (2.124 sq mi) | 
| Elevation | 170 m (560 ft) | 
| Population (2011) | |
| • Municipality | 29,891 | 
| • Municipality density | 5,400/km2 (14,000/sq mi) | 
| Time zone | EET (UTC+2) | 
| • Summer (DST) | EEST (UTC+3) | 
| Postal code | 144 5x | 
| Area code(s) | 210 | 
| Vehicle registration | Z | 
| Website | www.metamorfossi.gr | 
Metamorfosi (Greek: Μεταμόρφωση, which means "transfiguration", before 1957: Κουκουβάουνες - Koukouvaounes) is a suburb in the northern part of the Athens agglomeration, Greece, and a municipality of the Attica region.
Metamorfosi is situated east of the small river Kifisos, 9 km north of Athens city centre. The municipality has an area of 5.502 km2. The built-up area of Metamorfosi is continuous with those of the neighbouring suburbs Lykovrysi, Irakleio and Nea Filadelfeia. Motorway 1 and Motorway 6 intersect in Metamorfosi. The town is served by a Proastiakos suburban railway station.