UC San Diego News Center


UC San Diego Named 15th Best Research University in the World for Scientific Impact

In a global ranking designed to provide highly accurate measurements of the scientific impact of universities and their contributions to scientific collaboration, the University of California, San Diego is ranked the 15th best research university in the world.

The Leiden Ranking 2013 by the Centre for Science and Technology Studies (CWTS) of Leiden University in the Netherlands measured 500 major universities worldwide.

“It’s an honor to receive this global ranking which is testament to UC San Diego’s preeminence as an academic powerhouse,” said UC San Diego Chancellor Pradeep K. Khosla. “As a leading research university, we are an agent of change that helps to spur innovation and economic growth that address local, national and global challenges.”

The Leiden Ranking 2013 is based on publications in Thomson Reuters’ Web of Science, between 2008 and 2011. According to the CWTS, the ranking used a sophisticated set of bibliometric indicators.

Five broad fields of science are distinguished in the CWTS Leiden Ranking, which include:

  • Biomedical and health sciences
  • Life and earth sciences
  • Mathematics and computer science
  • Natural sciences and engineering
  • Social sciences and humanities

Of the top 25 universities ranked by the CWTS, 22 are from the United States including UC San Diego and four other University of California campuses.

For more information on the Leiden Ranking 2013 by the Centre for Science and Technology Studies, go to

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