The overarching objective of this report was to determine, from current evidence and experiences from the region, a view of co-management application and performance. Ultimately this improved understanding of co-management could guide fisheries management agencies working in Asia towards enabling better social, ecological and environmental outcomes from co-management and from fisheries systems. We envisioned that the findings would lead to recommendations to improve policies, programs, projects, and management practices. While comparability among the different co-management cases was of interest, it was not a priority objective. The priority objective was to understand the diversity of co-management as it is implemented and applied in practice, and to understand if common themes, in terms of strengths or challenges, emerged. We approached this study in four stages to examine the diversity and efficacy of co-management as it is applied in a range of different national, local and fisheries contexts.