EuCNC 2018 is the 27th edition of a successful series of a conference in the field of telecommunications, sponsored by the European Commission. The conference focuses on various aspects of 5G communications systems and networks, including cloud and virtualisation solutions, management technologies, and vertical application areas. It targets to bring together researchers from all over the world to present the latest research results, and it is one of the main venues for demonstrating the results of research projects, especially from successive European R&D programmes co-financed by the European Commission. The conference program will include: - Keynotes - Panels - Regular oral sessions (papers from open call, to be submitted for uploading to IEEE Xplore) - Special sessions, with papers on specific topics - Workshops, with papers and presentations on specific topics - Poster sessions (papers from open call addressing latest results) - Tutorials - Demos and exhibitions