John T. Hewitt (born 1949 in Detroit, Michigan) is an American entrepreneur, the co-founder of Jackson Hewitt and sole founder of Liberty Tax Service. As of late 2006 Hewitt served as CEO, chairman of the board and president of the latter. Together these companies account for more than 10,000 tax preparation offices in the United States and Canada. In addition, John Hewitt was a pioneer in the development and use of specialized tax-preparation software, which is now the industry's standard practice.