Dominating the field is Qatar, which has given an astonishing $1.5 billion to some 28 universities.
Other huge amounts were given by China, Saudi Arabia and the UAE.
These gifts aren't because these foreign countries love American universities. These are attempts to influence what the university teaches, and with that to influence the next generation of American leaders.
Even the Palestinian Authority, supposedly with no money to pay its own bills, manages to give a million dollars to Harvard University, in 2017.
In case you are wondering, many other countries do this as well. Israel gave some $53 million since 2012. The largest amount was to Johns Hopkins University, and the next two are USC and UCLA.
Every country from Afghanistan to Zimbabwe gives money to US universities. The largest single gift I saw was $750 million from Bermuda to Carnegie Mellon University, which might be a typo. A handful of countries gave gifts to individual universities of over $100 million, besides Qatar - India to University of Phoenix, Hong Kong and England to Harvard, France to Duke.
(h/t Yerushalimey)