This paper has three objectives. The first is to discuss the major issues involved in defining and measuring child poverty. The choices that must be made are clarified and a set of six principles to serve as a guide for public policy is proposed. The second objective is to take stock of child poverty and changes in child poverty in the majority of OECD countries since about 1990 when the Convention on the Rights of the Child came into force. Finally, the third objective is to formulate a number of suggestions for setting credible targets for the elimination of child poverty in the rich countries. This involves the development of appropriate and timely information sources as well as the clarification of feasible targets that may vary across the OECD.