|Regional unit||East Attica|
|• Municipal unit||14.478 km2 (5.590 sq mi)|
|Elevation||15 m (49 ft)|
|• Municipal unit||6,202|
|• Municipal unit density||430/km2 (1,100/sq mi)|
|Time zone||UTC+2 (EET)|
|• Summer (DST)||UTC+3 (EEST)|
Anavyssos (Greek: Ανάβυσσος) is a town and a former municipality in East Attica, Greece. Since the 2011 local government reform it is part of the municipality Saronikos, of which it is a municipal unit. The municipal unit has an area of 14.478 km2. At the 2011 census it had 6,202 inhabitants.
It is situated near the Saronic Gulf coast, at the foot of the Olympos hill (487 m). It is 2 km north of Palaia Fokaia, 4 km east of Saronida, 10 km west of Lavrio and 34 km southeast of Athens city centre. The Greek National Road 91 (Athens - Sounion) passes south of the town, along the coast.
- "Απογραφή Πληθυσμού - Κατοικιών 2011. ΜΟΝΙΜΟΣ Πληθυσμός" (in Greek). Hellenic Statistical Authority.
- Kallikratis law Greece Ministry of Interior (in Greek)
- "Population & housing census 2001 (incl. area and average elevation)" (PDF) (in Greek). National Statistical Service of Greece. Archived from the original (PDF) on 2015-09-21.