1918 |
- May 1, 1918
- Opened as Gyeongseong Public Agricultural School
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1950s |
- Jun 12, 1950
- Approved establishment of Seoul Agricultural Junior College
- Mar 1, 1956
- Upgraded to Seoul Agricultural College (four-year school)
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1970s |
- Mar 1, 1974
- Reorganized as Seoul Industrial College
- Jan 1, 1975
- Management transferred from the Seoul Metropolitan Office of Education to the Seoul Metropolitan Government
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1980s |
- Oct 20, 1981
- Changed name to University of Seoul
- Nov 25, 1981
- Opened Graduate School of Urban Administration (currently Graduate School of Urban Sciences)
- Mar 1, 1987
- Promoted to comprehensive university
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1990s |
- Mar 1, 1990
- Opened Graduate School of Business Administration
- Mar 1, 1991
- Opened Graduate School of Industry (currently Graduate School of Science and Technology)
- Jul 1, 1997
- Changed English name (from Seoul City University to the University of Seoul)
- Jul 1, 1997
- Established Seoul Citizen University
- Mar 1, 1999
- Established College of Arts (renamed to College of Arts and Sports in July 2001)
- Apr 23, 1999
- Expanded and reorganized Graduate School of Urban Administration to Graduate School of Urban Sciences
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2000s |
- Mar 1, 2000
- Opened Graduate School of Taxation and Graduate School of Education
- Sep 27, 2003
- Opened Graduate School of Design
- Apr 19, 2004
- Established Industry-Academic Cooperation Foundation
- Apr 19, 2004
- Abolished College of Liberal Arts and Sciences, established separate College of Humanities and College of Natural Sciences
- Mar 1, 2005
- Opened Institute of International Education
- Aug 25, 2006
- Opened student dormitory building
- May 1, 2008
- 90th anniversary of the university's founding
- Mar 1, 2009
- Opened UOS Law School
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2010s |

- Jun 8, 2010
- Selected as Leading University in Advancement of College Education (2010–2014, first among national and public universities)
- Sep 9, 2010
- Established Education Certification Institute and Undergraduate Education Institute
- Oct 14, 2010
- Opened Gangchon Training Center
- Dec 9, 2010
- Completed construction of the main stadium and main entrance tower
- Jan 13, 2011
- College of Business obtained Business Education Accreditation (5-year highest grade)
- Apr 21, 2011
- Opened International House
- Dec 26, 2011
- Obtained Engineering Education Accreditation (8 programs, 2012–2014)
- Sep 28, 2012
- Established Urban Flood Research Institute
- Nov 1, 2012
- Established International School of Urban Sciences
- Dec 27, 2012
- Launched school enterprises (THE Sweet Potato, D'Art)
- Jun 12, 2013
- Selected for Admissions Officer System Support Project (7 consecutive years, 2008–2014)
- Dec 27, 2013
- Obtained University Institution Evaluation Accreditation (6 areas, 17 sectors)
- Oct 27, 2014
- International School of Urban Sciences selected as specialized graduate school in overseas construction by Ministry of Land, Infrastructure and Transport
- Mar 1, 2016
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- Established College of Liberal Studies and Convergence (7 colleges → 8 colleges)
- Established Lifelong Education Center (10 affiliated institutions → 11 affiliated institutions)
- Creative Public Liberal Education Department of Education Innovation Headquarters → Liberal Education Department of College of Liberal Studies and Convergence
- Jun 15, 2016
- Completed construction of new Music Hall at University of Seoul
- Dec 21, 2016
- Ranked 1st in national integrity among national and public universities
- May 2, 2017
- Selected as 'Engineering Innovation Project Group' by Ministry of Science, ICT and Future Planning
- Mar 1, 2018
- Opened Graduate School of Urban Health
- Mar 6, 2018
- Opened workplace daycare center
- May 1, 2018
- 100th anniversary of university's founding
- May 2, 2018
- 100th anniversary ceremony (declared new vision, sealed time capsule)
- Aug 31, 2018
- Opened Centennial Memorial Hall
- Sep 1, 2018
- Established UOS Human Rights Center
- Apr 23, 2019
- Established UOS Graduate School Department of Smart City
- Jul 4, 2019
- Established UOS Big Data Research Center
- Nov 6, 2019
- Established UOS Graduate School of Urban Sciences Department of Spatial Planning and Public Policy
- Nov 7, 2019
- Established UOS Graduate School Department of Urban Big Data Convergence
- Nov 15, 2019
- Opened UOS Future Student Support Center
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2020s |

- Jan 1, 2020
- Established Future Innovation Institute, reintroduced Vice President system, separated Graduate School administration office
- Apr 16, 2020
- Established advanced departments (Artificial Intelligence Department, Convergence Applied Chemistry Department)
- May 6, 2020
- Completed remodeling of Student Hall basement
- May 26, 2020
- Selected for LINC+ 4th Industrial Revolution Innovation Leading University Project
- Jun 4, 2020
- Established Urban Science Big Data and AI Research Institute
- Sep 1, 2020
- Established Institutional Research (IR) Center
- Oct 30, 2020
- Selected for 4th stage BK21 project (2 project groups, 3 teams)
- Nov 25, 2020
- Completed expansion of the Architecture and Civil Engineering Building
- Dec 15, 2020
- Completed construction of University of Seoul Youth UP Platform
- Feb 24, 2021
- Opened student lounge and maker studio in Science and Technology Building
- Mar 3, 2021
- Selected for 2nd stage of University-Centered Research Institute Support Project in Science and Engineering
- Mar 15, 2021
- Opened "UOStory" portfolio system for student career development and management support
- May 4, 2021
- Selected for Digital New Technology Talent Nurturing Innovation Sharing University Project (Artificial Intelligence, Big Data)
- May 11, 2021
- Selected for High School Education Contribution University Support Project for 14 consecutive years
- May 20, 2021
- Selected for Next-Generation System Semiconductor Design Professional Training Project and System Semiconductor Convergence Professional Training Project
- Jun 1, 2021
- Selected for Basic Research Laboratory Support Project (Advanced Engineering - Construction and Transportation field)
- Jun 25, 2021
- Opened glamping site at Gangchon Training Center
- Jul 5, 2021
- Established UOS Graduate School Department of International Urban Development, Department of Artificial Intelligence, and Department of Convergence Applied Chemistry (departments of advanced technologies)
- Aug 17, 2021
- Selected as general financial support university in Basic Competency Diagnosis Evaluation
- Aug 31, 2021
- Selected for Seoul Campus Town Project (Comprehensive)
- Sep 2, 2021
- Selected as specialized graduate school in hazard testing field for Ministry of Environment's Chemical Safety Management Professional Training Project
- Nov 1, 2021
- Obtained engineering education accreditation for 7 departments
- Apr 14, 2022
- Selected as specialized graduate school for waste resource energy conversion
- May 25, 2022
- Selected for 2022 National Research Foundation of Korea Basic Research Laboratory Support Project
- Jun 9, 2022
- Selected as spatial information specialized university
- Jun 17, 2022
- Selected for 2022 Science and Technology Innovation Talent Nurturing Project
- Jul 11, 2022
- IJUS (International Journal of Urban Sciences) entered Q2 in SSCI urban studies field
- Dec 28, 2022
- Established new advanced departments and increased admission quota (161 confirmed) in Graduate School
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