DEON 2018's special focus is "Deontic reasoning for responsible AI". The successes of Artificial Intelligence over the last few years have brought to the fore a new and important application area for deontic logic: Responsible AI. On the one hand, this concerns systems for checking and proving responsibility characteristics of artificial intelligent agents and their designs, and on the other hand, it concerns responsible decision making and machine ethics. This DEON's special theme "Deontic reasoning for responsible AI" solicits contributions that address issues related to these two subjects. Topics of interest in this special theme include, but are not limited to: * moral decision making * norm awareness * accountability * explainability * causal and probabilistic theories of responsibility * operationalizations of ethical theories * collective responsibility * grades of responsibility