Jeffrey Albert Tucker is an American economics writer of the Austrian School, an advocate of anarcho-capitalism and Bitcoin, a publisher of libertarian books, a conference speaker, and an internet entrepreneur.

In 2021, Tucker founded the nonprofit Brownstone Institute for Social and Economic Research, a think tank that has published articles opposing various measures against COVID-19, including masking and vaccine mandates. Senior roles were given to Martin Kulldorff and Jay Bhattacharya, two of the co-authors of the Great Barrington Declaration, which Tucker also helped to organize. The institute has described itself as "the spiritual child" of the Great Barrington Declaration. Writers of Brownstone articles have included Sunetra Gupta, the third co-author of the Great Barrington Declaration, Paul E. Alexander, a former Trump administration health official, and George Gilder, a senior resident fellow at AIER.