| 1938 | June 29 Ginjiro Fujiwara, President, Oji Paper Co., Ltd., meets with Keio University President Shinzo Koizumi at the Kojunsha Club. This marks the start of the Fujiwara Institute of Technology, later to become the Keio University Faculty of Engineering. |
| 1939 | June Opening ceremony for the Fujiwara Institute of Technology. The Institute is privately funded by Keio University alumnus Ginjiro Fujiwara, who appoints Keio President Shinzo Koizumi as its head. A system with a three-year preparatory course and a three-year course at the Institute was established. |
| 1939 | September The old school building in Mita is moved to the northwest part of Hiyoshi Campus, and the Fujiwara Institute of Technology Preparatory School is completed. (Undergraduate program facilities are completed in November 1943.) |
| 1943 | November Undergraduate program facilities are completed. | |
| 1944 | August Ginjiro Fujiwara donates Fujiwara Institute of Technology to Keio University. It then became the Faculty of Engineering of Keio University, with departments of Mechanical Engineering, Electrical Engineering, and Applied Chemistry. |
| 1945 | April The firebombing of Tokyo results in total destruction of the preparatory school facilities and 80% of the undergraduate facilities. The Electrical Engineering and Applied Chemistry departments are evacuated to Fukui Prefecture, and the mechanical engineering students are put to work for around two months at the naval arsenal at Tagajo in Miyagi Prefecture. |
| 1945 | September U.S. military takes over Hiyoshi. Having lost its headquarters, the Faculty of Engineering moves to temporary facilities. |
| 1945 | October 8 Classes resume at the undergraduate program's temporary facilities in Meguro, Tokyo. |
| 1945 | October 10 Classes resume at the preparatory school's temporary facilities in Noborito, Kanagawa Prefecture. |
| 1946 | June The undergraduate program moves to temporary facilities in Mizoguchi, Kanagawa Prefecture. The facilities include part of a factory building owned by Nihon Kogaku Kogyo (Nikon). |
| 1948 | Engineering Faculty facilities set up in the Veterinary and Animal Science Vocational School. (School in Shiki City is closed in March 1949.) Until November 1950, research laboratories are housed there while new facilities in Koganei are constructed. |
| 1951 | Graduate School of Engineering masters program begins; new system for academic accreditation introduced. |
| 1953 | Graduate School of Engineering doctoral program starts. |
| 1957 | Department of Instrumentation Engineering is established. |
| 1959 | Department of Administration Engineering is established. |
| 1960 | Central Service Facilities for Research are opened. |
| 1966 | The Faculty of Engineering begins using a recommendation-based admission system. |
| 1968 | May In response to long-time requests for the return of the Faculty of Engineering to Hiyoshi, an official Consultative Committee decision is made to move the Faculty to the Yagami section of the Hiyoshi campus. |
| 1970 | Buildings 6, 7 (Elementary Engineering Classroom Buildings) are completed and first- and second-year instruction in elementary engineering begins. |
| 1971 | The Education, Research Laboratory (main building and wing), general classroom, and welfare buildings are completed. |
| 1971 | August The Matsushita Memorial Library is donated by Konosuke Matsushita. |
| 1971 | October Beginning with Mechanical Engineering and Applied Chemistry, the move to Yagamidai begins. The move of all departments is completed in March of the following year. |
| 1972 | March Ceremony held to mark the completion of the new buildings at Yagami. |
| 1974 | Department of Mathematical Engineering is opened. |
| 1981 | The name of the faculty is changed to the "Faculty of Science and Technology." Departments of Physics and Chemistry are opened. The Department of Mathematical Engineering is changed to Department of Mathematical Science. |
| 1985 | The Graduate School of Science and Technology was opened. |
| 1989 | Three programs for the Graduate School of Science and Technology are established: Computer Science, Material Science, and Biomedical Engineering. |
| 1996 | Faculty of Science and Technology reorganized (Departments of Mechanical Engineering, Electronic and Electrical Engineering, Applied Chemistry, Applied Physics and Physico-Informatics, Administration Engineering, Mathematics, Physics, Chemistry, System Design Engineering, and Information and Computer Engineering established). |
| 2000 | The Soh-Soh-Kan is completed. The Graduate School of Science and Technology is reorganized: School of Fundamental Science and Technology, Integrated Design Engineering, and Science for Open and Environmental Systems. |
| 2002 | Department of Biosciences & Informatics is opened. |
| 2003 | The Graduate School of Science and Technology's international Graduate Program (English-based Program) is opened. |
