Mary Deligianni


Mary Deligianni

Contact Details

Tel.: +30 210 6967106

m.deligianni [at]
Practice Areas

Data Protection & Cybersecurity, Corporate Commercial, Dispute Resolution

Greek and English

Mary Deligianni is a partner of our corporate commercial and is heading our data protection and cybersecurity practice. She joined our firm in 2003 and was admitted to the Piraeus Bar in 2004. 

Mary has extensive experience in advising on issues relating to data protection, cybersecurity and new technologies. She leads data privacy compliance programs, advises on the handling of data breach incidents, conducts risk assessment exercises, designs and implements data transfers outside the EU, drafts and negotiates complex data processing and outsourcing agreements, conducts privacy and security due diligence in connection with share and asset deals and delivers trainings to managers and employees on data protection compliance and data security. 

She regularly advises international and domestic clients on employment data protection issues, such as internal investigations, whistleblowing schemes and surveillance techniques, as well as on marketing campaigns and the operation of e-shops and smart apps. Her advice pertains to novel and complex issues on cloud-computing, connected devices and biometric databases, while she often interacts on issues of regulatory practice with the Hellenic Data Protection Authority. 

Mary is also very experienced in handling corporate needs of our clients, drafting of various types of commercial contracts and resolving disputes, in litigation and out-of-court.
Mary is member of the Advisory Board of StarAudit, a global program that offers a certification scheme to cloud providers. She is the Greek member of EuroCloud Europe, a non-profit organisation that delivers legal orientation and best practices on cloud computing and data protection. Mary is the author of several global publications on privacy, data protection and cybersecurity and she frequently participates as a speaker in international and local conferences.

Mary is admitted before the Court of Appeals and works in Greek and English.


University of Thrace, Faculty of Law (LL.B., Valedictorian, 2002)
University of London, University College London (LL.M. in Intellectual Property Law with Merit, 2003)