This book constitutes the refereed proceedings of the 27th International Workshop on
Coordination Organizations Institutions Norms and Ethics for Governance of Multi-Agent
Systems COINE 2023 held in London UK on May 29 2023 (co-located with 22nd International
Conference on Autonomous Agents and Multi-Agent Systems (AAMAS)). This book contains 10 full
papers which are the extended and revised versions of the papers accepted to the workshop. The
papers were carefully reviewed and selected from 13 submissions. They are organized in topical
sections as follows: Norms Social contracts Institutions and Privacy Studies on the notion
of Value and Argumentation and Conventions
