9. Warren Buffett
With an estimated 63 billion dollar fortune, the famed investor has for ten consecutive years significant donations to various foundations, including the Bill & Melinda Gates Foundation and four other foundations headed by his family. This year he spent no less than 2,800 million dollars to charity. Along with Bill Gates, Buffett is the creator of The Giving Pledge, an initiative that invites the world's wealthy to donate 50% of his fortune.