Afidnes (Greek: Αφίδνες, Ancient Greek: Ἄφιδνα or Ἀφίδναι, from the Middle Ages until 1919: Κιούρκα - Kiourka[2]) is a small town in East Attica, Greece.

[4] 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 (Athens - Lamia - Thessaloniki) passes east of the town.

In Greek mythology, Aphidna was the place where Theseus left Helen after he had abducted her.