This is an introductory essay prepared to open the 2015 Georgetown Institute for the Study of Markets and Ethics symposium on “The Ethics of Nudging.” After giving a brief description of the behavioral economics conception of nudging, I pose four questions designed to spur ethical analysis of the practice: 1) Is Nudging Libertarian Paternalism or Libertarian Paternalism?, 2) Is Nudging Ethically Justified?, 3) Should We Be Nudging Politicians?, and 4) Is Nudging Old Wine in New Glasses?