This report was produced under the Technical Assistance Grant: Determining the Potential for Carbon Capture and Storage (CCS) in Southeast Asia (TA 7575-REG), and is focused on an assessment of the CCS potential in Thailand, Viet Nam, and specific regions of Indonesia (South Sumatra) and the Philippines (Calabarzon). It contains inventories of carbon dioxide emission sources, estimates of overall storage potential, likely source-sink match options for potential CCS projects, and an analysis of existing policy, legal, and regulatory frameworks with a view toward supporting future CCS operations. The report also presents a comparative financial analysis of candidate CCS projects, highlights possible incentive schemes for financing CCS, and provides an actionable road map for pilot, demonstration, and commercial CCS projects.