I can provide you with a list of some of the top universities in the world as of my last knowledge update in September 2021. Please note that rankings can change over time, so I recommend checking the latest rankings from reliable sources like QS World University Rankings, Times Higher Education, or Academic Ranking of World Universities (ARWU) for the most up-to-date information. Here are 20 universities that were often highly ranked as of 2021:
1. Massachusetts Institute of Technology (MIT), USA
2. Stanford University, USA
3. Harvard University, USA
4. California Institute of Technology (Caltech), USA
5. University of Oxford, UK
6. University of Cambridge, UK
7. University of Chicago, USA
8. Imperial College London, UK
9. Swiss Federal Institute of Technology (ETH Zurich), Switzerland
10. University of California, Berkeley, USA
11. Princeton University, USA
12. Yale University, USA
13. University of Pennsylvania, USA
14. University of California, Los Angeles (UCLA), USA
15. University of California, San Francisco (UCSF), USA
16. University of Toronto, Canada
17. Columbia University, USA
18. National University of Singapore (NUS), Singapore
19. University of Tokyo, Japan
20. University of Edinburgh, UK
Please check the latest rankings to get the most current information on the world's top universities.