The Oxford Handbook of Moral Responsibility is a collection of 33 articles by leading international scholars on the topic of moral responsibility and its main forms, praiseworthiness and blameworthiness. The articles in the volume provide a comprehensive survey on scholarship on this topic since 1960, with a focus on the past three decades. Articles address the nature of moral responsibility - whether it is fundamentally a matter of deserved blame and praise, or whether it is grounded anticipated good consequences, such as moral education and formation, or whether there are different kinds of moral responsibility. They examine responsibility for both actions and omissions, whether responsibility comes in degrees, and whether groups such as corporations can be responsible. The traditional debates about moral responsibility focus on the threats posed from causal determinism, and from the absence of the ability to do otherwise that may result. The articles in this volume build on these arguments and appraise the most recent developments in these debates. Philosophical reflection on the personal relationships and moral responsibility has been especially intense over the past two decades, and several articles reflect this development. Other chapters take up the link between blameworthiness and attitudes such as moral resentment and indignation, while others explore the role that forgiveness and reconciliation play in personal relationships and responsibility. The range of articles in this volume look at moral responsibility from a range of perspectives and disciplines, explaining how physics, neuroscience, and psychological research on topics such as addiction and implicit bias illuminate the ways and degrees to which we might be responsible.