The Workshop on Circuits and System Design - WCAS 2014 is devoted to the presentation and discussion of design experiences with a high degree of relevance in industrial and educational contexts, as well as innovative design methodologies and applications of specific design technologies in an industrial context. The main idea of the workshop is to offer the chance (primarily to industry) of pointing out to the community real-life design and technology challenges that should be addressed in the short-to-medium term.