In this article I examine the relation between causation and moral responsibility. I distinguish four possible views about that relation. One is the standard view: the view that an agent's moral responsibility for an outcome requires, and is grounded in, the agent's causal responsibility for it. I discuss several challenges to the standard view, which motivate the three remaining views. The final view – the view I argue for – is that causation is the vehicle of transmission of moral responsibility. According to this view, although moral responsibility does not require causation, causation still grounds moral responsibility.