George Soros (pronounced /ˈsɔərɵs/, Hungarian: ) (born August 12, 1930, as György Schwartz) is an American currency speculator, stock investor, businessman, philanthropist, and political activist.

Forbes lists Soros as the 29th-richest person in the world, with a net worth estimated at $11.0 billion. Soros has given $6 billion to various causes since 1979.

Soros is chairman of Soros Fund Management and the Open Society Institute and is also a former member of the Board of Directors of the Council on Foreign Relations. He is also one of three initial funders of Center for American Progress, and is represented on the board. His funding and organization of Georgia's Rose Revolution was considered by Russian and Western observers to have been crucial to its success, although Soros said his role has been greatly exaggerated. In the United States, he is known for having donated large sums of money in a failed effort to defeat President George W. Bush's bid for re-election in 2004.