 The notion of collective responsibility, like that of personal responsibility and shared responsibility, refers in most contexts to both the causal responsibility of moral agents for harm in the world and the blameworthiness that we ascribe to them for having caused such harm. Hence, it is, like its two more purely individualistic counterparts, almost always a notion of moral, rather than purely causal, responsibility. But, unlike its two more purely individualistic counterparts, it does not associate either causal responsibility or blameworthiness with discrete individuals or locate the source of moral responsibility in the free will of individual moral agents. Instead, it associates both causal responsibility and blameworthiness with groups and locates the source of moral responsibility in the collective actions taken by these groups understood as collectives.