Memorandum of Understanding between the National Aeronautics and Space Administration of the United States of America and the Japan Aerospace Exploration Agency for Cooperation of the ASTRO-H Project (2013 October 8)
Agreement between the United States of America and Japan on Cooperation in the Field of Environmental Stewardship Relating to the United States Armed Forces in Japan, Supplementary to the Agreement under Article VI of the Treaty of Mutual Cooperation and Security between the United States of America and Japan, Regarding Facilities and Areas and the Status of United States Armed Forces in Japan (2015 September 28)
Agreement between the Government of the United States of America and the Government of Japan on Cooperation in Research and Development in Science and Technology (1988 June 20). Protocols, etc. (2014 April 23).