The Institute of Medical Science (Tōkyō-daigaku Ikagaku Kenkyūjo 東京大学医科学研究所) is an ancillary establishment of the University of Tokyo.

It succeeded the Institute of Infectious Diseases (伝染病研究所, Densenbyō Kenkyūjo) established in 1892 and is the foremost institute for medical and bioscience research in Japan.

A research hospital is attached to the institute.

The former Institute of Public Health was located on the site.

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