Building on Peter French’s important work, this chapter draws three distinctions that arise in the context of attributions of moral responsibility, understood as the extent to which an agent is blameworthy or praiseworthy. First, the subject of an attribution of responsibility may be an individual agent or a collective agent. Second, the object of the responsibility attribution may be an individual action (or consequence) or a collective action (or consequence). The third distinction concerns the temporal dimension of the responsibility attribution. Sometimes responsibility for an action is attributed to an agent at the time of the action. At other times responsibility for an action is attributed to an agent sometime after the action has ta...