Human beings, each considered as a single actor within society
- Cantillon, Richard - 18th century Irish economist
- Carey, Drew - American stand-up comedian, current host of "The Price Is Right"
- Carson, Kevin - American mutualist and anarchist writer
- Carter, Jimmy - Thirty-ninth President of the United States
- Casey, Doug - Investment writer, author of Crisis Investing
- Chafuen, Alejandro - President of the Atlas Economic Research Foundation
- Chamberlain, John - 20th century American journalist and author
- Chamberlin, William Henry - 20th century American journalist
- Chapman, Steve - Editorial writer for the Chicago Tribune and nationally syndicated columnist
- Childs, Roy - Editor of Libertarian Review (1977-1981) and lead book reviewer for Laissez Faire Books (1984-1992)
- Chodorov, Frank - Editor of two versions of The Freeman, at the Henry George School of Social Science and the Foundation for Economic Education
- Clark, Ed - Lawyer, 1980 United States Presidential candidate for the Libertarian Party
- Cleveland, Grover - Twenty-second and twenty-fourth President of the United States
- Cleyre, Voltairine de - American anarchist writer, lecturer and activist
- Clinton, Bill - Forty-second President of the United States
- Cobden, Richard - Nineteenth century British politician, leading proponent of free trade
- Coke, Edward - 17th century English jurist, drafter of the Petition of Right
- Condillac, Étienne Bonnot de - 18th century French philosopher
- Constant, Benjamin - 18th/19th Franco-Swiss author
- Crane, Ed - Co-founder and former President of the Cato Institute