This book constitutes the refereed proceedings of the 17th IFIP WG 8.5 International Conference on Electronic Participation, ePart 2025, held in Krems, Austria, during August 31-September 4, 2025.

The 21 full papers included in this book were carefully reviewed and selected from 116 submissions.The papers were organized in topical sections as follows: Foundations and Frameworks of eParticipation; AI and Algorithmic Systems in Public Administration; Governance, Collaboration, and Policy Alignment; Local Practices, Implementation, and Innovation; Digital Services, Usability, and Citizen Interaction.