This paper discusses women's role, resource access control and decision-making power in the context of rapid changes in rural livelihoods, local knowledge systems and NRM. Participatory research was carried out in collaboration with NGOs and community-based organisations in six distinct agro-ecological regions of Andhra Pradesh and Maharashtra, with a focus on eco nomically and socially marginalised communities. The research revealed that state policies have resulted in dramatic changes from food to commercial crops. This has threatened food and fodder security, the biodiversity of crops, natural flora, local livestock and poultry breeds, and led to unsustainable extraction of ground water and high levels of indebtedness. Women have borne the brunt. Women who formerly played key decision-making roles have been marginalised, their knowledge and expertise made valueless. Traditionally also women have been denied access to certain kinds of knowledge that constrain their livelihoods. Participatory research has empow ered women to take the lead in movements to challenge mainstream paradigms of sustainable development.