This book constitutes the proceedings of the 11th IFIP WG 8.5 International Conference on Electronic Participation, ePart 2019, held in San Benedetto del Tronto, Italy, in September 2019, in conjunction with the 18th IFIP WG 8.5 IFIP International Conference on Electronic Government (EGOV 2019) and the International Conference for E-Democracy and Open Government Conference (CeDEM 2019). The 13 revised full papers presented were carefully reviewed and selected from 26 submissions. The papers are clustered under the following topical sections: eParticipation Developments; Digital Transformations; Crisis and Emergency Management; and User Perspectives.