| Title | Tître | |
| California (Geography) | Californie | |
| Calvinism (Ecclesiastical history) | Calvinisme | |
| Calvinists (Ecclesiastical history) | Calvinists | |
| Canada (Geography) | Canada | |
| Canadians, Philosophy of the | Canadiens, philosophie des | |
| Cannibals (Ancient History. Modern History) | Anthropophages | |
| Canon | Canon | |
| Canon (Theology) | Canon | |
| Card (Printing) | Carton | |
| Caterer (Culinary arts) | Traiteur | |
| Caucasus (Mythology. Geography) | Caucase | |
| Cause (Metaphysics) | Cause | |
| Celtiberians (Geography. History) | Celtiberiens | |
| Censors of Books (Literature) | Censeurs de livres | |
| Central and Centrifugal Forces | Forces centrales & centrifuges | |
| Ceuta (Geography) | Ceuta | |
| Character (Ethics) | Caractère | |
| Character of Nations | Caractère des nations | |
| Character of Societies and Particular Groups | Caractère des sociétés ou corps particuliers | |
| Chastity | Chasteté | |
| Cheese (Diet) | Fromage | |
| Cheese | Fromage | |
| Chemistry (Particular physics) | Chymie | |
| Chess | Échecs | |
| Child (Natural law. Ethics) | Enfant | |
| Chocolate (Diet) | Chocolat | |
| Chocolate (Domestic economy. Diet) | Chocolat | |
| Christian Holidays (Ecclesiastical history) | Fêtes des Chrétiens | |
| Christian Religion | Religion chrétienne | |
| Chronological (machine) (Chronology) | Chronologique (machine.) | |
| Church Father (Ecclesiastical history) | Père de l'église | |
| Citizen (Ancient history. Modern history. Public law) | Citoyen | |
| Civility, Politeness, Affability (Grammar. Ethics) | Civilité, Politesse, Affabilité | |
| Civil Society | Société civile | |
| Clean Sweep of the Dice (Calculus of probabilities) | Rafle de dés | |
| Clergies (Jurisprudence) | Clergés | |
| Clergy (Ecclesiastical history) | Clergé | |
| Climate (Geography) | Climat | |
| Clitoris (Anatomy) | Clitoris | |
| Cocoa or Cocoa Tree (Natural history) | Cacao ou Cacoyer | |
| College [abridged] (Architecture) | Collège [abridged] | |
| Colonist (Commerce) | Colon | |
| Colony (Ancient history. Modern history. Commerce) | Colonie | |
| Combination (Mathematics) | Combinaison | |
| Comedy (Literature) | Comédie | |
| Commerce | Commerce | |
| Common (Jurisprudence) | Commune | |
| Common (Jurisprudence) | Commune | |
| Common Knowledge (Jurisprudence) | Commune renommée | |
| Common Sense (Metaphysics) | Bon-Sens | |
| Commons (Modern history) | Communes | |
| Commune or Commons (Jurisprudence) | Commune ou communes | |
| Congo (Modern geography. Trade) | Congo | |
| Consecrated Bread (Ecclesiastical history) | Pain béni | |
| Conservation of Kinetic Energy | Conservation des forces vives | |
| Constantinople (Geography. Commerce) | Constantinople | |
| Construction (Architecture) | Construction | |
| Continuity, Law of | Continuité, loi de | |
| Conversation, Discussion (Grammar) | Conversation, entretien | |
| Correctness (Literature) | Correct | |
| Cosmology (Science of nature. Cosmology) | Cosmologie | |
| Cotton [abridged] (Natural history. Botany) | Coton [abridged] | |
| Courante (Music. Dance) | Courante | |
| Cowl (Ecclesiastical history) | Capuchon | |
| Craft [abridged] (Grammar) | Metier [abridged] | |
| Cran (Art of the tailor) | Cran | |
| Credulity | Crédulité | |
| Cuckoo (Card Game) | Coucou | |
| Cuckoo (Materia Medica) | Coucou | |
| Cuckoo (Mythology) | Coucou | |
| Cuckoo (Natural History. Ornithology) | Coucou | |
| Cuisine (Mechanical arts) | Cuisine | |
| Cut a Suit, To (Tailor) | Tailler un habit | |
| Cutting of Punches for Print Characters | Gravure de Caracteres d'Imprimerie | |
