Porto Rafti (Greek: Πόρτο Ράφτη), officially named Limin Markopoulou (Λιμήν Μαρκοπούλου), is a seaside resort town in East Attica, Greece.
It is part of the municipality of Markopoulo Mesogaias. It is a thirteen minute journey by car from the Athens International Airport Eleftherios Venizelos to Porto Rafti, and about 30 minutes from downtown Athens via Motorway 6.
In 2011, its permanent population was 9,686. However, during high summer season the population is believed to exceed 90,000.
The region of Mesogaia is well known for its fine vineyards, figs, and pistachios. Currently, there are several modern wine-making facilities in the region.