This book constitutes the refereed proceedings of the 14th International Workshop on Logic, Language, Information and Computation, WoLLIC 2007, held in Rio de Janeiro, Brazil in July 2007.

The 21 revised full papers presented together with 5 invited papers were carefully reviewed and selected from 52 submissions. The papers focus on 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.