Dimitris Koutsoumpas was born in Lamia on the 10th of August 1955. He is married to Maria Nanas and has a daughter. His family were militants in the EAM national resistance, some of them were executed by the Nazi occupational troops or by the military courts in the period of the civil war, the rest were imprisoned and exiled. His father, Apostolis Koutsoumpas, a member of the KKE, was arrested in 1945 in Larisa, tried, imprisoned and exiled for 8 years. Dimitris Koutsoumpas graduated from high school in June 1973, took the Panhellenic entrance exam and entered the Law Department of the University of Athens.