- Baden, John A. - Founder and Chairman of F.R.E.E.
- Badnarik, Michael - Software engineer, 2004 Libertarian Presidential candidate
- Bagge, Peter - American cartoonist, creator of the comic book series Hate
- Bailey, Covert - Best-selling fitness author, creator of the "Fit of Fat" books and programs
- Baloo@ - Pen name of cartoonist Rex May
- Bandow, Doug - Syndicated columnist, speaker
- Barger, Ralph - Founding member of the Oakland Hells Angels, author
- Barnett, Randy E. - Professor of law at Boston University
- Barr, Bob - Former U.S. Representative from Georgia, potential 2008 Libertarian Party presidential candidate
- Barro, Robert J. - Professor of economics at Harvard University
- Barry, David - Miami Herald humor columnist
- Bast, Joseph L. - President and CEO of The Heartland Institute
- Bastiat, Frederic - French economist and author
- Bauer, Peter T. - Professor of Economics at the London School of Economics
- Becker, Gary S. - Professor of economics at the University of Chicago, 1992 Nobel Prize winner in Economics
- Bell, Art - Host of syndicated all-night radio show "Coast to Coast AM"
- Bennett, James T. - Professor of economics and author
- Benson, Bruce L. - Professor of economics at Florida State University
- Bentham, Jeremy - 18th/19th century English philosopher and legal scholar, an early proponent of utilitarianism
- Bergland, David P. - Law professor, Libertarian Party presidential candidate in 1984
- Bergman, Ingrid - Swedish-born Hollywood actress, winner of three Oscars, portrayed Ilsa in Casablanca
- Bethell, Tom - Senior editor of The American Spectator
- Bezos, Jeff - Founder and chief executive of Amazon.com
- Bidwell, Robert E. - Business management and turnaround specialist, author, professor
- Bisson, Kenneth A - Physician, libertarian activist, organizer of Freedom Cruises
- Blackstone, William - 18th century English jurist, author of Commentaries on the Laws of England
- Block, Walter - Professor of economics, Loyola University
- Boaz, David - Executive VP of Cato Institute, libertarian author
- Bock, Alan - Senior editorial writer for The Orange County Register
- Boettke, Peter J. - Professor of economics at George Mason University and editor of Review of Austrian Economics
- Bogart, Humphrey - American Oscar-winning actor, star of The African Queen, Casablanca and The Caine Mutiny
- Bolick, Clint - Co-founder of the Institute for Justice, President of the Alliance for School Choice
- Boortz, Neal - Nationally syndicated radio talk show host
- Borlaug, Norman - Agricultural scientist, the “father of the Green Revolution”
- Boudreaux, Donald J. - Professor of Economics, past President of FEE
- Bovard, James - Author, controversial Washington journalist
- Bradbury, Ray - Science fiction writer, author of Fahrenheit 451 and The Martian Chronicles
- Bradford, R. William - Editor and publisher of Liberty magazine
- Brand, Stewart - Creator of The Whole Earth Catalog
- Branden, Barbara - Writer and lecturer, author of The Passion of Ayn Rand
- Branden, Nathaniel - Psychotherapist, author of The Psychology of Self-Esteem
- Branson, Richard - Founder and chairman of Virgin Group, Ltd.
- Breggin, Peter R. - Psychiatrist and author, founder of The International Center for the Study of Psychiatry and Psychology
- Bright, John - 19th century English Member of Parliament
- Brin, David - American science fiction writer, winner of several Nebula, Hugo and LOCUS Best Novel awards
- Browne, Harry - Investment author, Libertarian Party presidential candidate 1996 and 2000
- Brudnoy, David - Host of "The David Brudnoy Show" on WBZ NewsRadio 1030
- Brynner, Yul - Hollywood actor, winner of Best Actor Oscar for The King and I
- Buchanan, James M. - 1986 Nobel Prize winner in Economic Sciences
- Buckstein, Steve - Founder and President of the Cascade Policy Institute
- Burg, Bob - Motivational speaker and author of Winning Without Intimidation
- Burns, Gene - Host of "The Gene Burns Program" on KGO NewsTalk Radio
- Burroughs, William S. - 20th century American writer
- Bush, George H. W. - Director of the CIA and forty-first President of the United States
- Bush, George W. - Forty-third President of the United States
- Butler, Pierce - Associate Justice of the U.S. Supreme Court in the early 20th century
- Böhm-Bawerk, Eugen von - Nineteenth century Austrian economist and minister of Finance
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