|Regional unit||East Attica|
|• Municipal unit||4.531 km2 (1.749 sq mi)|
|Elevation||380 m (1,250 ft)|
|• Municipal unit||5,040|
|• Municipal unit density||1,100/km2 (2,900/sq mi)|
|Time zone||UTC+2 (EET)|
|• Summer (DST)||UTC+3 (EEST)|
Kryoneri (Greek: Κρυονέρι, meaning "cold water") is a suburban town of East Attica, Greece. Since the 2011 local government reform it is part of the municipality Dionysos, of which it is a municipal unit. The municipal unit has an area of 4.531 km2.
Kryoneri is situated in the hills in the northeastern part of the Athens conurbation, at about 380 m elevation. It lies in the eastern foothills of the Parnitha mountains. It is 2 km west of Agios Stefanos and 20 km northeast of Athens city centre. Motorway 1 (Athens - Lamia - Thessaloniki) and the railway from Athens to Thessaloniki pass east of the town.
- "Απογραφή Πληθυσμού - Κατοικιών 2011. ΜΟΝΙΜΟΣ Πληθυσμός" (in Greek). Hellenic Statistical Authority.
- Kallikratis law Greece Ministry of Interior (in Greek)
- "Population & housing census 1991 (incl. area and average elevation)" (in Greek). National Statistical Service of Greece.