This policy and technical guidebook was published by Cambodia's Ministry of Environment. It is designed as a comprehensive decision-making framework to assist policymakers, local authorities, and project developers in choosing and executing sustainable waste recovery projects. The guidebook focuses entirely on reusing and recycling organic waste within Cambodia. It provides practical criteria, implementation models, and strategic tools for transforming agricultural and urban organic waste into beneficial resources—such as organic compost or biogas energy—helping reduce greenhouse gas emissions, improve waste management systems, and promote a circular economy.