Mark Thornton is an American economist of the Austrian School. He has written on the topic of prohibition of drugs, the economics of the American Civil War, and the "Skyscraper Index". He is a Senior Fellow with the Ludwig von Mises Institute in Alabama and a Research Fellow with the Independent Institute.

The Ludwig von Mises Institute for Austrian Economics, or Mises Institute, is a nonprofit think tank headquartered in Auburn, Alabama, that is a center for Austrian economics, radical right-wing libertarian thought and the paleolibertarian and anarcho-capitalist movements in the United States. It is named after the economist Ludwig von Mises (1881–1973) and promotes his version of heterodox Misesian Austrian economics.