This LNCS volume is part of FoLLI book serie and contains the papers presented at the 6th
International Workshop on Logic Rationality and Interaction (LORI-VI) held in September 2017
in Sapporo Japan. The focus of the workshop is on following topics: Agency Argumentation and
Agreement Belief Revision and Belief Merging Belief Representation Cooperation Decision
making and Planning Natural Language Philosophy and Philosophical Logic and Strategic
Reasoning.