The idea of people's participation has long been part of development thinking. But today the management of local natural resources by village communities is widely accepted as an institutional imperative. It is therefore essential to examine how these institutions perform, especially from the perspective of the more disadvantaged. Based on extensive fieldwork among community forestry groups in India and Nepal, and existing case studies, this paper demonstrates how seemingly participatory institutions can exclude significant sections, such as women. It provides a typology of participation, spells out the gender equity and efficiency implications of such exclusions, and analyses what underlies them. It also outlines a conceptual framework to help analyse the process of gender exclusion and how it might be alleviated.