Tokyo University of Marine Science and Technology (Tōkyō Kaiyō Daigaku) is a national university in Japan. The main campus (Shinagawa Campus) is located in Minato, Tokyo and another campus (Etchujima Campus) is in Koto, Tokyo. The university was established with a merger of two national universities, namely, Tokyo University of Mercantile Marine (Tōkyō Shōsen Daigaku) in Koto, Tokyo and Tokyo University of Fisheries (Tōkyō Suisan Daigaku) in Minato, Tokyo.
In April 1945, during World War II, three nautical colleges at Tokyo, Kobe and Shimizu were merged into one college simply named Nautical College, which was located in Shimizu. In 1949 the college was developed into the University of Mercantile Marine under Japan's new educational system. In 1957 the university moved to Tokyo again and was renamed Tokyo University of Mercantile Marine.