Gary W. Keller
Gary Keller is an American author and real estate entrepreneur. He is the co-founder of Keller Williams Realty, an international real estate franchise with headquarters in Austin, Texas. He is the author of numerous books including The Millionaire Real Estate Investor which became both a New York Times best-seller and a BusinessWeek best-seller and The ONE Thing, which reached #1 on the Wall Street Journal business best-seller list. He currently serves as the chairman of the board at Keller Williams Realty.