Kornilia Anastasakou was born and raised in Athens. Her parents, Aristoteles Anastasakos and Vassiliki Anastasakou were both economists. Her brother, Agisilaos Anastasakos is a high ranking officer of the Hellenic Coastguard, specalised in International Maritime Policy Issues and Ex-Member of the European Comission. She is married to Michael Zazanis, Professor at the Statistics Department of the Athens University of Economics and Business. She has a son, Aristomenes.