T homas Pritzker is an American billionaire and a key leader of the powerful Pritzker family of Chicago, one of America's wealthiest dynasties. He is the son of the late Jay Pritzker, who, along with his brothers, built the family's vast business empire, which is centered on the Hyatt Hotel chain and the Marmon Group industrial conglomerate. Following a major family restructuring and division of assets in the early 2000s, Thomas emerged as the public face and principal leader of the family's continuing business interests.

As the executive chairman of the Hyatt Hotels Corporation, he is responsible for guiding the global strategy of the iconic hospitality brand. He is also the chairman and CEO of The Pritzker Organization, the family's private investment firm, which manages a diversified portfolio of private companies. He has been instrumental in stewarding the family's legacy and its vast fortune into a new era. He is also the chairman of the Hyatt Foundation, which sponsors the prestigious Pritzker Architecture Prize, considered the world's top honor in the field.