This market study, commissioned by the Dutch Ministry of Foreign Affairs, maps the circular economy in California, specifically focusing on the Los Angeles region. The circular economy is the concept of systematically rebuilding the economy to encourage the continued use of resources and reduce negative impacts on the environment. Core elements of circularity are embedded within each key urban system including water, housing, infrastructure, waste management, and food. State and local public policy aimed at supporting the circular economy is reviewed in the report and the region’s circular industries are studied. Potential public and private partners for circular companies are identified, and past circular project successes and upcoming projects of interest are highlighted.