This article is about ‘role responsibility’ as understood by H. L. A. Hart in his taxonomy of responsibility concepts in his book, Punishment and Responsibility. More particularly, it focuses on what I call ‘public, institutional role responsibility’. The main arguments are that such role responsibility is based on authority and power rather than physical and mental capacity; and the foundation of role responsibility in authority has significant implications for what Hart referred to as ‘liability–responsibility’, which I unpack in terms of (...) ‘attribution’, ‘accountability’ and ‘liability’. The article addresses possible objections to the authority-based analysis of role responsibility based on the concept of ‘moral’ responsibility, and on understandings of what types of question are ‘philosophical.’. (shrink)