In the wake of health and economic crises across the world, solidarity is emerging as both a moral imperative and urgent social goal. This book approaches solidarity as a political good, both a framework of power structures and grounds for moral motivation. The distinct approaches to public goods and social value demonstrate how social connectedness is intricately tied to the distribution of public goods, and the moral commitments that grow out of them. The essays in this book explore different features of the political, moral and civic approaches to solidarity. They offer moral justification for solidarity, grounded in the intrinsic value of social connectedness and epistemic deference; propose structural accounts of solidarity as action against racial oppression, or as an effective non-moral framework; propose to redefine property relations, so as to capture and redistribute property’s social value, and envision public goods as both an instrument of civic relations and as a condition to well-rounded, meaningful human lives. By providing a series of thought-provoking debates about social obligations and justice, the book reestablishes solidarity and public goods as an urgent and timely topic. The chapters in this book were originally published as a special issue of the journal Critical Review of International Social and Political Philosophy.