A personal data distribution management system includes source data management devices, a data distribution management device, and a relay processing device that are separate devices and are connected on a network. The source data management device includes a database that stores personal data on an individual subjected to a measurement with a measuring instrument, and attribute information related to the individual and the measurement, the database storing the personal data and the attribute information as original data associated with real name information on the individual. The data distribution management device fetches original data except for personal data, and creates a data catalog. The relay processing device outputs the data, which is the data except for real name information on individuals and from the database of each source data management device based on the data usage request received from the outside, to a data user terminal. This configuration enables data distribution management that reduces the risk of information leakage of personal data and individual real name information.