This article examines the role and influence of three American foundations -Rockefeller, Carnegie, and Ford -in developing international knowledge networks that significantly impacted upon the Third World, helping to consolidate US hegemony after 1945, fostering pro-US values, methods and research institutions. The international networks were modelled on prior domestic initiatives resulting in the effective intellectual hegemony of 'liberal internationalism', of empirical scientific research methods, and of policy-oriented studies. Such domestic hegemony constructed a key basis of America's rise to globalism, which after 1945 required a continuing and enhanced foundation role, especially with the onset of the Cold War. The article, which examines the role of the US foundations in relation to intellectual hegemony construction in Latin America, Indonesia, and Africa, concludes that the evidence is best explained by Gramscian theory, and calls for further empirical research in this vital area.This article is concerned with the role of American philanthropic foundations in the development of international knowledge networks.1 By an international knowledge network is meant a system of coordinated research, disseminated and published results, study and often graduate-level teaching, intellectual exchange, and financing, across national boundaries. The international networks may also include official policymakers and international aid and other agencies. Landrum Bolling (1982) shows that, despite the lack of a 'grand design', American foundations (and other agencies) have constructed a remarkable foreign aid (educational and other) network that, he suggests, has had a significant impact on the Third World. It is clear that American foundations consciously helped to construct US international hegemony after 1945 through international knowledge networks that aimed to foster a pro-US environment of values, methods and research institutions across a range of fields and academic disciplines. Such international networks were modelled on previous foundation initiatives within the United States itself, from the 1920s to the 1940s, resulting in the effective intellectual hegemony of 'liberal internationalism', of empirical scientific research methods, and of policy-oriented studies (mostly under the banner of 'realism' or 'realistic' research, designed to be of practical utility to policymakers). Such domestic hegemony constructed a key basis of America's rise to globalism, 2 which after 1945, required a continuing and enhanced foundation role, especially with the onset of the Cold War.The international knowledge networks of interest here were constructed and