FIRST QUARTER 2014 RESULTS UNDER IFRS TO BE RELEASED

ON MAY 8, 2014

ATHENS, Greece – May 2, 2014 –Hellenic Telecommunications Organization SA(ASE: HTO, OTC MARKET:HLTOY), the Greek full-service telecommunications provider, announces that it will release its first quarter 2014 results under IFRS on Thursday, May8, 2014.

OTE's management will host a conference call at 17:00 (GREECE) / 16:00 (CONTINENT) / 15:00 (UK) /10:00 (EASTERN US)following the release, to review the results.

Details regarding the conference call dial-in and replay numbers as well as the live audio webcast of the conference call, following the results, can be accessed at:https://www.ote.gr/web/guest/corporate/ir