QS World University Rankings is an annual publication of university rankings by Quacquarelli Symonds (QS). Previously known as Times Higher Education–QS World University Rankings, the publisher had collaborated with Times Higher Education (THE) magazine to publish its international league tables from 2004 to 2009 before both started to announce their own versions. QS then chose to continue using the pre-existing methodology, while THE adopted a new methodology to create their rankings.
In partnership with Elsevier, the QS system now comprises the global overall and subject rankings (which name the world's top universities for the study of 51 different subjects and five composite faculty areas), alongside five independent regional tables (Asia, Latin America, Emerging Europe and Central Asia, the Arab Region, and BRICS).
Being the only international ranking to have received International Ranking Expert Group (IREG) approval, the QS ranking is viewed as one of the three most-widely read university rankings in the world, along with Academic Ranking of World Universities and Times Higher Education World University Rankings. According to Alexa Internet, it is the most widely viewed university ranking worldwide.
https://www.topuniversities.com/university-rankings/world-university-rankings/2021