FINANCIAL CALENDAR 2010

Áthens, February 25, 2010 - The Hellenic Telecommunications Organization SA (OTE SA), in accordance with paragraphs 4.1.2 and 4.1.4.3.1 of the Hellenic Stock Exchange Regulation, announces the Financial Calendar, according to which:

1. The annual general shareholders meeting, will take place on Wednesday, 16 June 2010 at OTE headquarters, 99 Kifisias Av., Marousi, Athens.

2. The 2009 stand-alone and consolidated financial statements will be released on Thursady, 25 February 2010 (and uploaded on the company's website: http://www.ote.gr/portal/page/portal/InvestorRelation) and published in the press on the following day.

3. The company will hold a conference call, with analysts and investors, to discuss its full year 2009 financial results, on Thursday, 25 February 2010.

4. The ex-dividend date will be Friday, 9 July 2010. During this meeting the shares will be traded without the right of receiving dividend for the year 2009. The ex-divident date follows the expiry of the share derivatives, series of June, and of the index, in which the share participates.

5. The starting date of 2009 dividend payment will be Monday, 19 July 2010.

OTE Group is Greece's leading telecommunications organization and one of the pre-eminent players in Southeastern Europe, providing top-quality products and services to its customers.

Apart from serving as a full service telecommunications group in the Greek telecoms market, OTE Group has also expanded during the last decade its geographical footprint throughout South East Europe, acquiring stakes in the incumbent telecommunications companies of Romania and Serbia, and establishing mobile operations in Albania, Bulgaria and Romania. At present, companies in which OTE Group has an equity interest employ over 33,000 people in five countries, and our portfolio of solutions ranges from fixed and mobile telephony to Internet applications, satellite, maritime communications and consultancy services.

Listed on the Athens Stock Exchange, the company trades under the ticker HTO as well as on the New York Stock Exchange under the ticker OTE. In the U.S., OTE's American Depository Receipts (ADR's) represents ½ ordinary share.

Additional Information is also available on http://www.ote.gr.

Contacts:

OTE: Dimitris Tzelepis - Head of Investor Relations

Tel: +30 210 611 1574, Email: [email protected] 

Maria Kountouri - Assistant to the Head of Investor Relations

Tel: +30 210 611 5381, Email: [email protected] 

Christina Hadjigeorgiou - Financial Analyst, Investor Relations

Tel: +30 210 611 1428, Email: [email protected]

Dimitris Tsatsanis - Financial Analyst, Investor Relations

Tel: +30 210 611 6071, Email: [email protected]

Daria Kozanoglou - Senior Communications & Regulatory Affairs Officer,

Investor Relations

Tel: +30 210 611 1121, Email: [email protected]

Eftychia Tourna - Communications & Regulatory Affairs Officer, Investor Relations

Tel: +30 210 611 7236, Email: [email protected]

Eleni Agoglossaki - Communications & Regulatory Affairs Officer, Investor Relations

Tel: +30 210 611 7880, Email: [email protected]

Forward-looking statement