Chaidari (Greek, modern: Χαϊδάρι), is a suburb in the western part of the Athens agglomeration, west of central Athens and north of Piraeus.
The geography of the municipality of Chaidari is diverse: the eastern part, where the town Chaidari is situated, is densely populated and forms a continuous built up area with the inner suburbs of Athens. The rocky Aigaleo hills run through the central part of the municipality. The pine forest of Dafni and the Daphni Monastery lie on the eastern slopes of Aigaleo. The westernmost part of Chaidari is the small industrial port town Skaramagkas, on the Saronic Gulf near Eleusis.
The main attractions of the area are Daphni Monastery, Palataki Tower and Diomideios Botanical Garden.