Payment for Environmental Services (PES) programs have been implemented in PES and PES-like forms in Cambodia focusing on watershed, biodiversity conservation, recreation/landscape beauty, and carbon sequestration and storage. However, a specific PES law or policy has yet to be developed. This report presents a review of selected current literature on PES and/or PES-like schemes implemented in Cambodia. Local and international NGOs were visited and interviewed in order to capture the elements of the individual programs. Four programs of PES-like programs in different protected areas and wildlife sanctuaries in Cambodia were chosen for this study: (1) Agri-Environment Payment Scheme in Kulen Prom Tep Wildlife Sanctuary, (2) Conservation Agreement Payment Program in the Cardamom Mountains, (3) Chambok Community-Based Ecotourism Project, and (4) REDD+ Cambodia Carbon Sequestration Project in Oddar Meanchey.