After laying out a typology of international regimes, eight international and regional human rights regimes are analyzed in order to (1) examine the utility of regime analysis in noneconomic issue-areas, and (2) assess the nature, extent, and evolution of international cooperation on human rights. There has been a remarkable growth of international action since 1945, when human rights were not even widely accepted as a legitimate issue-area. This growth can be explained largely by expanding perceptions of moral interdependence and community, increased national commitment, the growing ideological appeal of human rights, and changes in the distributions of international power. These same factors, however, suggest only limited future growth. On a broader theoretical plane, the case of human rights suggests a significant, if limited and principally heuristic, utility for regime analysis, especially to the extent that international relations is becoming increasingly concerned with specific issues.