The Asian Co-benefits Partnership (ACP) was created to support the mainstreaming of co-benefits into projects and policies in Asia and the Pacific in 2010. The increase in the number of policies featuring co-benefits in Asia and the Pacific suggests the ACP has had some success achieving this objective. Recent changes in the international climate policy landscape (the continual strengthening of Nationally Determined Contributions (NDCs) and the creation of an Article 6.4 financing mechanism) as well as developments with air pollution initiatives have nonetheless generated demand for concrete examples of how countries are integrating co-benefits into NDCs and other sectoral interventions. The main purpose of this report is to share with policymakers how countries are working on co-benefits in NDC and related processes. The hope is that that the opening chapter and three case studies— Thailand, Mongolia, and China—will shed light on the progress and gaps encountered in leveraging co-benefits to integrate climate and other development priorities in NDCs and related areas.