This book is edited in collaboration with FoLLI, the Association of Logic, Language and Information. It constitutes the proceedings of the 17th International Workshop on Logic, Language, Information and Computation, WoLLIC 2010, held in Brasilia, Brazil, in July 2010. The book presents 7 invited talks together with 13 papers which were carefully reviewed and selected from 32 submissions. The papers cover some of the most active areas of research on the frontiers between computation, logic, and linguistics, with particular interest in cross-disciplinary topics. Typical areas of interest are: foundations of computing and programming; novel computation models and paradigms; broad notions of proof and belief; formal methods in software and hardware development; logical approach to natural language and reasoning; logics of programs, actions and resources; foundational aspects of information organization, search, flow, sharing, and protection.