Antony P. Ressler (born October 12, 1960) is an American billionaire businessman. He co-founded the private equity firms Apollo Global Management in 1990, and Ares Management in 1997. As of August 2023, his net worth was estimated by Forbes at $7.5 billion. Born in 1960 to a Jewish family, Ressler was one of five children of Dorothy and Ira Ressler. His father was an attorney and World War II veteran. Ressler earned a BSFS from Georgetown University's School of Foreign Service and an MBA from Columbia Business School. After university, he worked at Drexel Burnham Lambert eventually reaching senior vice president in the high yield bond department with responsibility for the new issue/syndicate desk. In 1990, on the heels of the collapse of Drexel Burnham Lambert, he co-founded the private equity firm Apollo Global Management with Leon Black, Drexel's managing director, head of the Mergers & Acquisitions Group, and co-head of the Corporate Finance Department; John Hannan, Drexel's former co-director of international finance; Craig Cogut, a lawyer who worked with Drexel's high-yield division in Los Angeles; Arthur Bilger, the former head of the Drexel's corporate finance department; and Marc Rowan, Josh Harris and Michael Gross, all of whom worked under Black in the mergers and acquisitions department. In 1997, he co-founded Ares Management with former Apollo Global Management co-worker John H. Kissick and Bennett Rosenthal, who joined the group from the global leveraged finance group at Merrill Lynch. Ressler is a member of the executive committee of the board of directors of the Cedars-Sinai Medical Center; finance chair and member of the executive committee of the Los Angeles County Museum of Art; a board member of Campbell Hall Episcopal School in Studio City, California; and one of the founding members of the board and finance chair of the Painted Turtle Camp, an organization that takes children with chronic and life-threatening illnesses on camping trips. Ressler is a supporter of military veterans through the work of The Greatest Generations Foundation.