Tibor Richard Machan was a Hungarian-American philosopher. A professor emeritus in the department of philosophy at Auburn University, Machan held the R. C. Hoiles Chair of Business Ethics and Free Enterprise at the Argyros School of Business & Economics at Chapman University in Orange, California until 31 December 2014.

Chapman University is a private research university in Orange, California. Encompassing eleven colleges, the university is classified among "R2: Doctoral Universities – High research activity". The school maintains its founding affiliations with the Christian Church and the United Church of Christ, but is a secular university.