This text examines the extent to which a network approach should inform research on collective action. Leading social movements researchers systematically map out and assess the contribution of social network approaches to their field of enquiry in light of broader theoretical perspective. By exploring how networks affect individual contributions to collective action in both democratic and non-democratic organizations, and how patterns of inter-organizational linkages affect the circulation of resources within and between movements, the authors show how network concepts improve our grasp of the relationship between social movements and elites and of the dynamics of the political processes.