This book disentangles the complex meanings of responsibility in nanotechnology development by focusing on its theoretical and empirical dimensions. The notion of responsibility is extremely diversified in the public discourse of nanoscale technologies. Addressed are major disciplinary perspectives working on nanotechnology, e.g. philosophy, sociology, and political science, as well as the major multidisciplinary areas relevant to the innovation process, e.g. technology assessment and ethics. Furthermore, the interplay between such expertises, disciplines, and research programmes in providing a multidisciplinary understanding of responsibility is emphasized.