Prof. Gabriel Calzada is Associate Professor of Economics at the King Juan Carlos University in Spain and Founder-President of the libertarian think tank Instituto Juan de Mariana. He is also Vice-Director of the Austrian School-oriented scholarly Procesos de Mercado. He has been a Rowley Fellow of the Ludwig von Mises Institute and is currently a Fellow of the Centre for the New Europe. In the past he has been intern at the Acton Institute (Grand Rapids, Michigan) and research fellow at the Mises Institute (Auburn Alabama).

He is a frequent broadcaster on television and Radio and has written extensively for such publications as Libertad Digital, Spanish Herald, Expansion, Mises Daily, The Journal of Libertarian Studies, Procesos de Mercados, La Ilustracion Liberal, and Canarias Liberal.

As part of his popularization effort of free market ideas he also teaches high school students at the King Juan Carlos Foundation and has traduced several works from English, German and French.