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Leona Helmsley - Also known as the Queen of Mean, this businesswoman left a large donation in her will. She passed away in 2007.

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Leona Helmsley - She left all her assets (around US$5 billion) to the Leona M. and Harry B. Helmsley Charitable Trust. The charity works in conservation and healthcare.

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Stanley F. and Fiona B. Druckenmiller - Stanley is the founder of Duquesne Capital Management, as well as the Druckenmiller Foundation. Along with his wife Fiona, Stanley made the biggest donation of 2009.

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Stanley F. and Fiona B. Druckenmiller - They donated a combined amount of US$705 million to their foundation, which works in fields like medical research and ending poverty.

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Warren Buffett - One of the most well-known billionaires in the world, Warren Buffett made three huge donations in 2012.

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Warren Buffett - He donated stocks worth over US$1 billion to three charitable organizations that are run by his children.

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William S. Dietrich II - The largest donation of 2011 came from William S. Dietrich II, who donated US$265 million to Carnegie Mellon University.

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William S. Dietrich II - Dietrich, the former chairman of Dietrich Industries, also donated US$125 million to the University of Pittsburgh in 2011.

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Mark Zuckerberg - The CEO of Facebook made two huge donations to the Silicon Valley Community Foundation in 2011 and 2012.

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Mark Zuckerberg - He donated 18 million shares of Facebook twice, with a combined value of around US$992 million.

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John Santikos -

Santikos was best known as the head of Santikos Theatres, which was founded by his father, Louis Santikos.

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John Santikos - When he died in December 2014, Santikos donated approximately US$605 million to the San Antonio Area Foundation, which went towards founding the John L. Santikos Charitable Foundation.

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Bill Gates - A list like this wouldn't be complete without Bill Gates, who made history with his wife Melinda in 2000.

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Bill Gates - The Microsoft founder also founded the Bill and Melinda Gates Foundation, donating around US$28 billion towards the organization.

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Ralph C. Wilson Jr. - Wilson was the owner of NFL team the Buffalo Bills.

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Ralph C. Wilson Jr. - Upon his death, Wilson (left) donated US$1 billion to the Ralph Wilson Foundation, which invests money in various organizations and communities.

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Nick Woodman - Nick Woodman made a killing off GoPro, the camera company he founded. Like Zuckerberg, Woodman made a hefty donation to the Silicon Valley Community Foundation.

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Nick Woodman - In 2014, he donated US$500 billion to the organization, with his philanthropy efforts being recognized at the San Francisco Gala.

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Kenneth Griffin - CEO of investment firm Citadel, Kenneth Griffin is one rich man. Back in 2014, he made a huge donation to Harvard University.

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Kenneth Griffin - It's reported that Griffin donated US$150 million to the university in order to assist the financial aid program.

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Stephen M. Ross - Ross is a revered real estate developer, and majority owner of the NFL's Miami Dolphins.

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Stephen M. Ross - In 2013, he donated US$200 million to the construction of the Stephen M. Ross Athletic Campus Athletics South Competition and Performance Project.

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Mark Zuckerberg and Priscilla Chan - Zuckerberg and his wife, Priscilla Chan, made a joint donation of stock to the Chan Zuckerberg Initiative in 2017.

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Mark Zuckerberg and Priscilla Chan - The donation was worth around US$1.9 billion, and went towards efforts to create equal opportunity in health, education, and scientific research.

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Philip and Penelope Knight - Knight is known as the co-founder of Nike. In 2016, along with his wife Penelope, he donated half a billion dollars to the University of Oregon, to be paid over a 10-year payment plan.

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Nicolas Berggruen - In 2016, Nicolas Berggruen, founder and president of Berggruen Holdings, pledged US$500 million to the Berggruen Institute in Los Angeles.

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Ronnie and Gerald Chan - Brothers Ronnie and Gerald Chan are Hong Kong-based real estate tycoons, who both made huge contributions to Harvard University.

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Ronnie and Gerald Chan - In 2014, the pair pledged US$350 million, one of the largest donations ever made to the university.

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Anonymous - The biggest donation of 2010 was from an anonymous person. They donated US$200 million to Baylor University, where they graduated.

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Anonymous - The money is intended to go towards medical research in the College of Arts and Sciences, the School of Social Work, as well as other programs at the university.

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