Varkiza (Greek: Βάρκιζα), also formerly Alianthos (Αλίανθος), is a town and a suburb of greater Athens forming part of the municipality of Vari-Voula-Vouliagmeni in southern Attica of the Megalo Daktylo (Large Finger).

It lies approximately 2 km south of Vari, 22 km S of Athens city centre, SW of the Eleftherios Venizelos International Airport and the Attiki Odos (numbers 6 and 62), NW of Cape Sounio, and south of the Hymettus Ring.

Varkiza has a widely known beach, which has tennis courts, parkland and fields, restaurants, taverns, complexes and other amenities.

Later, Varkiza became part of the Athens urban area, and in the 1960s, the connecting highway had two lanes added.

Varkiza has one school (dimotiko), banks, a church, restaurants, bars, taverns, a post office and a couple of squares (plateies).