Reason magazine is a libertarian monthly magazine from the Reason Foundation.Reason was founded in 1968 by Lanny Friedlander as a more-or-less monthly mimeographed publication. In 1970 it was purchased by Robert W. Poole, Manuel S. Klausner, and Tibor R. Machan, who set it on a more regular publishing schedule. As the monthly print magazine of "free minds and free markets", it covers politics, culture, and ideas with a mix of news, analysis, commentary, and reviews.

Nick Gillespie has been the magazine's Editor-in-Chief since 2000. Other Reason writers include Charles Paul Freund, Jacob Sullum, Jesse Walker, Brian Doherty, Ronald Bailey, Radley Balko, Tim Cavanaugh, Julian Sanchez, Kerry Howley, David Weigel, Katherine Mangu-Ward, Michael C. Moynihan, Cathy Young, Jonathan Rauch, and cartoonist Peter Bagge. Former editors include Marty Zupan and Virginia Postrel.

Erik Spiekermann, the inventor of the typeface Meta, headed a redesign of Reason in 2001, aiming for a look that is "cleaner, more modern, making use of the Meta typeface throughout".

In June 2004, subscribers to Reason magazine received a personalized issue that had their name, and a satellite photo of their home or workplace on the cover.

The magazine now has a circulation of around 60,000 and has twice been named one of the US's "50 best magazines" by the Chicago Tribune.

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