This book constitutes the thoroughly reviewed joint post-conference proceedings of two international workshops on Coordination, Organization, Institutions and Norms in Agent Systems, COIN@AAMAS 2011, held in Taipei, Taiwan in May 2011 and COIN@WI-IAT 2011, held in Lyon, France in August 2011. The 12 revised full papers presented were carefully selected for presentations. The papers are organized in topical sections on agent coordination, norm-aware agent reasoning, as well as norm creation and enforcement.

This book constitutes the refereed proceedings of the two workshops held at the 14th International Conference on Principles and Practice of Multi-Agent Systems, PRIMA 2011, held in Wollongong, Australia, in November. The workshops were, Workshop on Agent Based Simulation for a Sustainable Society (ABSSS 2011) and International Workshop on Multi-Agent Smart Computing (MASmart 2011). The 8 papers presented were carefully reviewed and selected from various submissions. The papers cover topics from agent based simulation for a sustainable society and on multi-agent smart computing.