Thomas Scott Kaplan (born September 14, 1962) is an American billionaire businessman, philanthropist and art collector. Kaplan is the world's largest private collector of Rembrandt's works. Kaplan is the chairman and chief investment officer of The Electrum Group LLC, a New York City-based investment, advisory and asset management firm with a focus on the natural resources sector. Since 2017, he has been the chairman of the International Alliance for the Protection of Heritage in Conflict Areas (ALIPH), a Geneva-based foundation established by France and the United Arab Emirates.