Peristeri (Greek: Περιστέρι, standing for "pigeon/dove" in Greek) is a suburban municipality in the northwestern part of the Athens agglomeration, Greece. With 139,981 inhabitants (2011 census), it is the seventh-largest municipality of Greece by population.
Peristeri is located about 4 km (2 mi) northwest of the centre of Athens. It lies between the Egaleo Mountain in the northwest and the Cephissus river in the southeast. Its area is 10.5 square kilometres (4.1 sq mi). Its built-up area is continuous with that of Athens and the neighbouring suburbs Aigaleo, Chaidari, Petroupoli, Ilion and Agioi Anargyroi.