Human beings, each considered as a single actor within society
- Badnarik, Michael - Software engineer, 2004 Libertarian Presidential candidate
- Bandow, Doug - Syndicated columnist, senior fellow at the Cato Institute
- Barnett, Randy - Professor of law at Boston University
- Bastiat, Frédéric - 19th century French economist
- Bauer, Peter Thomas - Professor of Economics at the London School of Economics
- Becker, Gary - Professor of economics at the University of Chicago, 1992 Nobel Prize winner in Economics
- 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 - Law professor, Libertarian Party presidential candidate in 1984
- Blackstone, William - 18th century English jurist, author of Commentaries on the Laws of England
- Block, Walter - Professor of economics, Loyola University and Senior Fellow, Ludwig von Mises Institute
- Boaz, David - Executive vice president of the Cato Institute, author of Libertarianism: A Primer
- Bock, Alan - Former senior editorial writer for The Orange County Register
- Boettke, Peter - Professor of economics at George Mason University and editor of Review of Austrian Economics
- Böhm von Bawerk, Eugen - Nineteenth century Austrian economist and minister of Finance
- Bolick, Clint - American attorney, co-founder of the Institute for Justice
- Borlaug, Norman - Agricultural scientist, the "father of the Green Revolution"
- Boudreaux, Donald J. - Professor of Economics, past President of the Foundation for Economic Education
- Bovard, James - Author, controversial Washington journalist
- Bradford, R. W. - Co-founder, editor and publisher of Liberty (1987) magazine
- Branden, Barbara - Writer and lecturer, author of The Passion of Ayn Rand
- Branden, Nathaniel - Psychotherapist, author of The Psychology of Self-Esteem
- Bright, John - 19th century English Member of Parliament
- Browne, Harry - Investment author, Libertarian Party presidential candidate 1996 and 2000
- Buchanan, James M. - 1986 Nobel Prize winner in Economic Sciences
- 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