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The World’s Billionaires 2015
| No. | Name | Net worth (USD) | Age | Citizenship | Source(s) of wealth |
|---|---|---|---|---|---|
| 1 | Bill Gates | $79.2 billion | 59 | United States | Microsoft |
| 2 | Carlos Slim | $77.1 billion | 74 | Mexico | Telmex, Grupo Carso |
| 3 | Warren Buffett | $72.7 billion | 84 | United States | Berkshire Hathaway |
| 4 | Amancio Ortega | $64.5 billion | 78 | Spain | Inditex Groiup |
| 5 | Larry Ellison | $54.3 billion | 70 | United States | Oracle Corporation |
| 6 | Charles Koch | $42.9 billion | 79 | United States | Koch Industries |
| 6 | David Koch | $42.9 billion | 74 | United States | Koch Industries |
| 8 | Christy Walton | $41.7 billion | 59-60 | United States | Wal-Mart |
| 9 | Jim Walton | $40.6 billion | 66 | United States | Wal-Mart |
| 10 | Liliane Bettencourt | $40.1 billion | 92 | France | L”oreal |
