Which city in the world has most universities?

There's no single definitive answer to which city has the most universities in the world, as different ranking systems use different criteria (e.g., including or excluding colleges, defining "university" differently, etc.), and comprehensive, globally consistent data is difficult to obtain.

However, cities frequently cited as contenders for having the most universities include:

* London, UK: London boasts a large number of universities, including prestigious institutions like Oxford and Cambridge (though technically outside of London proper, they're often included in London's overall higher education count), along with numerous other universities and colleges.

* Tokyo, Japan: Tokyo has a dense concentration of universities and colleges, reflecting Japan's strong emphasis on higher education.

* New York City, USA: New York City houses many universities, both large and small, public and private.

Ultimately, determining a single "most" is subjective and depends on the specific methodology used. Any claim needs to be carefully considered in light of the data sources and definitions applied.