The U.S. and China have each sought to increase their economic engagement in Southeast Asia. U.S. agencies have identified Indonesia and Vietnam as important emerging U.S. partners that contribute to regional stability and prosperity. Indonesia has the world's 10th largest economy in terms of purchasing power, and Vietnam is one of the most dynamic economies in East Asia. Both the U.S. and China have established comprehensive partnerships with each country that are designed to enhance their bilateral cooperation in key areas. This report presents case studies for Indonesia and Vietnam, providing greater detail about the U.S.'s and China's trade and investment, competition, and actions to further economic engagement in the two countries. Tables and figures. This is a print on demand report.