J . Hyatt Brown is an American billionaire who built his family's small insurance agency into a major national brokerage firm. He is the chairman of Brown & Brown, one of the largest and most successful insurance brokerage firms in the United States. The company was co-founded by his father, and Hyatt joined the business in the 1960s. He has since been the driving force behind its immense growth.

As the longtime CEO and now chairman, he has built the company through a highly successful and aggressive strategy of acquiring hundreds of smaller, local insurance agencies across the country. He took the company public on the New York Stock Exchange and has created immense value for shareholders over his decades of leadership. He is a prominent and highly respected figure in the insurance industry and a major philanthropist in his home state of Florida.