In the last two decades, we have seen a significant increase of interest in agent-based computing. This field is now set to become one of the key intelligent systems technologies in the 21st century. The aim of the EUMAS series is to provide a forum for academics and practitioners in Europe at which current research and application issues are presented and discussed. 

EUMAS 2020, the 17th instalment of the conference series, follows the tradition of previous editions (Oxford 2003, Barcelona 2004, Brussels 2005, Lisbon 2006, Hammamet 2007, Bath 2008, Agia Napa 2009, Paris 2010, Maastricht 2011, Dublin 2012, Toulouse 2013, Prague 2014, Athens 2015, Valencia 2016, Evry 2017, Bergen 2018), and aims to encourage and support activity in the research and development of multi-agent systems, in academic and industrial efforts. 

The conference aspires to be the primary European forum for researchers interested in the theory and practice of autonomous agents and multi-agent systems. EUMAS enables researchers to meet, present challenges, preliminary and mature research results in an open and informal environment. To attract students as well as experienced researchers, preliminary as well as mature work, EUMAS 2020 offers three submission types and formal proceedings. Also, we will be working hard to arrange for the post-publication of selected papers in the form of a special issue of a high-quality journal in the area. 

EUMAS 2020 is a designated event of the European Association of Multi-Agent Systems (EURAMAS): http://www.euramas.org (http://www.euramas.org/) 

• Action and Planning
• Adaptation and Learning
• Agent Architectures
• Agent Programming Languages
• Agent Development Methodologies and Tools
• Agent-Based Simulation
• Agent Organisations and Institutions
• Agent-oriented Software Engineering
• Agents and Complex Systems
• Applications of Multi-agent Systems
• Argumentation
• Automated negotiation
• Biologically inspired approaches
• Cognitive Models
• Collective and Swarm Intelligence
• Collective Intentionality
• Communication, Cooperation, and Coordination
• Economic Models
• Electronic Commerce
• Ethical behaviour of multi-agent systems
• Formal Modelling
• Game-Theoretic Methods
• Logics for Multi-Agent Systems
• Logics for Strategic Reasoning
• Negotiation
• Self-organisation
• Semantic Web Agents
• Socio-technical Systems
• Theories of Agency
• Trust and Reputation
• Verification
• Virtual Agents
• Voting and Judgment Aggregation Models for multi-agent systems