The third edition of the EU Datathon has been officially launched on 28 January 2019 by the Publications Office of the European Union, in partnership with the Romanian Presidency of the Council of the European Union.The EU Datathon is a growing-in-popularity event aiming to further stimulate the use of open data issued by the European Union. It allows competitors to showcase their data skills and innovative ideas. Furthermore, it offers them the opportunity to network and gather support in order to continue developing their ideas after the competition. The challenges Participants are invited to develop apps and interactive visualisations offering new services or public information insights to citizens, public authorities and businesses. They have to use at least one dataset made available by the EU Institutions, Agencies and other bodes and combine it with at least one dataset of the competition’s partners.