James Tomilson 'Tom' Hill III (born May 24, 1948, in New York) is an American billionaire hedge fund manager, prominent art collector, and Vice Chairman of The Blackstone Group. He grew up in New York, attending The Buckley School and Milton Academy, where he was a varsity wrestler. Hill graduated cum laude from Harvard College with a B.A. in history, literature, and Japanese studies, contributing to The Harvard Lampoon, and later earned an M.B.A. from Harvard Business School. His career began in 1973, with significant roles at Goldman Sachs before joining Blackstone in 2007. At Blackstone, he served as Vice Chairman and President/CEO of Blackstone Alternative Asset Management (BAAM), overseeing global alternative investment strategies and hedge fund solutions. He transitioned in January 2019 to Chairman of BAAM and later became a private investor. Hill is deeply involved in the arts, founding the Hill Art Foundation in New York City's Chelsea neighborhood in 2019 with his wife, Janine W. Hill, to promote exhibitions and education. He holds leadership roles including Chairman of the Solomon R. Guggenheim Foundation's Board of Trustees (since November 2023), Chairman Emeritus of the Hirshhorn Museum and Sculpture Garden, and member of the Metropolitan Museum of Art's board and executive committee. He also serves on the Council on Foreign Relations' Investment Committee as Chairman Emeritus, the Smithsonian Institution's Investment Committee, and boards for Lincoln Center Theater and the Telluride Foundation. Married to Janine W. Hill with two children, he resides in New York City, where his philanthropy and art collecting—featuring artists like Christopher Wool—bridge finance and culture.