Hellenic Telecommunications Organization S.A. revenue for the last year amounted to 3.77 B USD, the most of which — 1.84 B USD — came from its highest performing source at the moment, Greece - Fixed. The greatest contribution to the revenue figure was made by Greece — last year it brought Hellenic Telecommunications Organization S.A. 3.61 B USD, and the year before that — 3.45 B USD.