Abstract: Personal data protection in international contracts is broadly analyzed, especially in the context of European Union Law. The regulation of personal data protection, the concept of personal data, the link between the personal data protection right and the privacy right, the data protection right holder and the person who is obliged to respect it are approached, one by one. In most of international contracts, the protection of personal data is necessary, because a transnational data transfer takes place. Τhe rules to be respected for transnational data transfer and the effectiveness of these rules in the context of the evolution of technology and the ubiquitousness of the Internet will be analyzed.

Key-words: personal data protection, privacy right, international contracts, personal data transfer