Bryan Douglas Caplan (born April 8, 1971) is an American economist and author.
Caplan is a professor of economics at George Mason University, research fellow at the Mercatus Center, adjunct scholar at the Cato Institute, and frequent contributor to Freakonomics as well as publishing his own blog, EconLog.
He is a self-described economic libertarian.
The bulk of Caplan's academic work is in behavioral economics and public economics, especially public choice theory.