A comprehensive review of trends in international grantmaking has never been undertaken. This study fills that gap for one important source of private support—U.S. grantmaking foundations. The study was conducted by the Foundation Center with the support and collaboration of the Council on Foundations. Its broad purpose is to foster better understanding among funders, nonprofits, and the international community of the role that foundations play in the international field and about the ways that they practice international grantmaking.