Kifisia or Kifissia is a municipality and one of the most affluent northern suburbs in the Athens agglomeration, Attica, Greece, mainly accessed via Kifissias Avenue, running all the way from central Athens up to Theseos Avenue in the suburb of Nea Erythraia. It has traditionally been home to rich Greek families and major Greek political families.

Attica, or the Attic Peninsula, is a historical region that encompasses the entire Athens metropolitan area, which consists of the city of Athens, the capital of Greece and the core city of the metropolitan area, as well as its surrounding suburban cities and towns. It is a peninsula projecting into the Aegean Sea, bordering on Boeotia to the north and Megaris to the west. The southern tip of the peninsula, known as Laurion, was an important mining region.