This Framework for Mainstreaming Participatory Development Processes into Bank Operations presents an overview of how participatory development processes fit into the operations of the Asian Development Bank, and of how these processes will be systematically incorporated into its business practices. The Framework complements other recently established policies that have provided for greater openness and accountability by the Bank in regard to its operations. The aim is to catalyse a wider sense of ownership of the development activities that the Bank supports. An overview of participatory development is presented, while discussing the benefits and risks that are associated with it, as well as the mechanisms through which participation can be facilitated. The operational implications of mainstreaming participatory development for both the Bank and agencies in borrowing countries, and the operational costs of doing so, are discussed. The approach that the Bank will follow for mainstreaming participatory development into its operations is further elaborated.