Jay Robert (J.B.) Pritzker (born January 19, 1965) is a venture capitalist, entrepreneur, philanthropist and private business investor in the United States. He is managing partner and co-founder of The Pritzker Group, a private investment firm; founder of New World Ventures, an early-stage information technology investor; and principal owner of Hyatt Hotels Corporation and TransUnion Corporation. He is a member of the wealthy Pritzker family.
In 2011, the Forbes 400 Richest Americans list ranked him as the 159th richest person in the U.S. with an estimated net worth of $2.5 billion and the 692nd richest person in the world.