Tokuji Utsu (Japanese: 宇津 徳治, April 13, 1928 - August 18, 2004) was a Japanese seismologist and Professor Emeritus of University of Tokyo.[1] He graduated from the Faculty of Science at the University of Tokyo in 1951 and became a professor at the Earthquake Research Institute, University of Tokyo in 1977. Utsu was compiling "Catalog of Damaging Earthquakes in the World".[1] He is recipients of the Medal with Purple Ribbon, the Order of the Sacred Treasure, 2nd class and so on.[2]