The Iranian Green Movement emerged after the presidential election in June 2009. The paper tracks down its foundational origins through the concept of fragmented collective action, that points to the dispersion of a social movement's political energies and the fragmentation of its constitutive groups. It also addresses the significance of informal mobilizing networks and the widespread use of modern virtual space to bring together an intersubjectively constructed collective identity which was shaped by the movements interactions with political forces and with its interlocutors. Finally, the paper argues that the collective identity shaped the movement's strategies over the course of its evolution.