The Handbook on the Economics of Giving, Reciprocity and Altruism provides a comprehensive set of reviews of literature on the economics of nonmarket voluntary transfers. The foundations of the field are reviewed first, with a sequence of chapters that present the hard core of the theoretical and empirical analyses of giving, reciprocity and altruism in economics, examining their relations with the viewpoints of moral philosophy, psychology, sociobiology, sociology and economic anthropology. Secondly, a comprehensive set of applications are considered of all the aspects of society where nonmarket voluntary transfers are significant: family and intergenerational transfers; charity and charitable institutions; the nonprofit economy; interpersonal relations in the workplace; the Welfare State; and international aid.