Cardano, Girolamo/Cardanus, Hieronymus Mediolanensis (1501-1576)

Carnap, Rudolf (1891-1970)

Castoriadis, Cornelius (1922-1997)

Chomsky, Noam (1928)

Cicero, Marcus Tullius (106-43 B.C.)

Clemens Alexandrinus, S. (ca. 150-ca. 215)

Cohen, Morris Raphael (1880-1947)

Comenius, Iohannes Amos/Komenský Jan Amos (1592-1670)

Condorcet, Marie Jean Antoine Nicolas de Caritat, de (1743-1794)

Copernicus, Nicolaus/Kopernik, Mikolaj (1473-1543)

Croce, Benedetto (1866-1952)