Os Hillman is a pioneer in the faith and work movement. He is the author of 24 books and a recognized authority in the role that faith and ethics play in the marketplace. He is the Founder and President of Marketplace Leaders Ministries, training people to fulfill their calling in and through their work life and to view their work as ministry.

Os writes a daily newsletter called TGIF: Today God Is First which is read by hundreds of thousands of subscribers in 104 countries. Before starting Marketplace Leaders, Os owned and operated an ad agency serving national clients. He has won many awards from the direct marketing industry, such as the International Echo Award, direct marketing's highest achievement for excellence.

Os attended the University of South Carolina on a golf scholarship and was a golf professional for three years before going into business. Os is married to Pamela and lives in Atlanta.