EGOV-CeDEM-ePart 2018 represents the merge of the IFIP WG 8.5 Electronic Government (EGOV), the IFIP WG 8.5 IFIP Electronic Participation (ePart) and the Conference for E-Democracy and Open Government Conference (CeDEM). The EGOV-CeDEM-ePart proceedings bring together the essence of academic and practical knowledge on e-government, e-democracy and open government, and e-participation. The peer-reviewed ongoing research papers, project descriptions, reflections and viewpoints, workshop and panel proposals, posters, and the PhD colloquium papers found in these proceedings capture the newest developments, trends, tools and procedures, and demonstrate the many ways that these impact society, the polity, and the economy.