The Japan Medical Safety Research Organization is a Japanese organization designated as the Medical Accident Investigation and Support Center under the medical accident investigation system established by the amended Medical Care Act. Its work focuses on supporting investigations into deaths that fall within the system and helping promote the prevention of recurring medical accidents. The organization provides information and guidance for bereaved families and medical institutions, including explanations of investigation procedures, reporting documents, and resources for internal reviews.

It also conducts center investigations and offers advice on whether a case may qualify as a medical accident under the system. To share lessons from cases, the organization publishes recommendations and alert reports, supported by case examples and educational videos. Its activities include training programs, public lectures, seminars, surveys, and research-related initiatives.

The website also provides annual reports, press releases, reference materials, frequently asked questions, and information about committees and partner organizations