Afidnes is a small town in East Attica, Greece. Since the 2011 local government reform it is part of the municipality Oropos, of which it is a municipal unit. The municipal unit has an area of 34.638 km2. It is situated in the eastern foothills of the Parnitha mountains, 3 km southwest of Polydendri, 5 km southeast of Malakasa and 27 km north of Athens city centre. Afidnes has a station on the railway from Athens to Thessaloniki. The A1 motorway passes east of the town. It is part of Athens metropolitan area.