| Codex Cavensis | Codex chartaceus | Codex Cumanicus |
| Codex Gigas | Codex Gregorianus | Codex Hermogenianus |
| Codex Magliabechiano | Codex Manesse | Codex manuscriptus |
| Codex Marchalianus | Codex Omega | Codex Regius |
| Codex rescriptus | Codex Seraphinianus | Codex Sinaiticus |
| Codex Theodosianus | Codex Vaticanus | Codex Vindobonensis Mexicanus I |
| Codex Wormianus | Codiaeum | Codiaeum variegatum |
| Codices Latini Antiquiores | Codilia | Coding by convention |
| Codington County, South Dakota | Codiomyrmex | Codiomyrmex flagellatus |
| Codiomyrmex semicomptus | CODLAG | Codo Technologies |
| Codocera | Codocera ferruginea | CODOG |
| CODOH | Codona | Codonanthe |
| Codonemma | Codonia | Codonocalyx |
| Codonopsis | Codonopsis bhutanica | Codonosiphon |
| Codophila varia | Codorniu | Codrescu |
| Codrus | CODwaw | Cody Martin Linley |
| Cody Reed Kasch | Cody Rhodes | Cody Robert Simpson |
| Cody Runnels | Cody Simpson | Cody Zeller |
| Cody, Wyoming | Coecarrhopalites | Coed School |
| Coelacanthidae | Coelacanthiformes | Coelacanthimorpha |
| Coelacanthus | Coelenterata | Coelestina |
| Coeli lumen | Coelidia | Coelidia albororata |
| Coelidia dubia | Coelidia obscura | Coelidia rama |
| Coelidia scrupulosa | Coelidiinae | Coeligena |
| Coeligena torquata | Coelioxys | Coelioxys quadridentata |
| Coelochalcis carinifrons | Coelococcus | Coelocrabro |
| Coelodonta | Coelodonta antiquitatis | Coelogaster |
| Coeloglossum | Coeloglossum albidum | Coeloglossum alpinum |
| Coeloglossum purpureum | Coeloglossum viride | Coelognathus helena |
| Coelogyne elegans | Coelogyne humilis | Coelogyne lawrenceana |
| Coelophrys | Coelophysidae | Coelophysinae |
| Coelophysis | Coelophysis bauri | Coelophysoidae |
| Coelophysoidea | Coeloplana | Coeloplana metschnikowii |
| Coelopus cyanescens | Coelosaurus antiquus | Coelostomidiidae |
| Coelostylis | Coelum Australe Stelliferum | Coelum Stellatum Christianum |
| Coelurosauravidae | Coelurosauravus | Coelurosauria |
| Coelurus | Coem. | Coena Cypriani |
| Coenagrion | Coenagrion armatum | Coenagrion hastulatum |
| Coenagrion hylas | Coenagrion johanssoni | Coenagrion lunulatum |
| Coenagrion mercuriale | Coenagrion ornatum | Coenagrion puella |
| Coenagrion pulchellum | Coenagrion scitulum | Coenagrion vanbrinkae |
| Coenagrionidae | Coenagrionoidea | Coenaletes |
| Coenaletidae | Coenaletoidea | Coendou |
| Coendou bicolor | Coendou prehensilis | Coendou rothschildi |
| Coenobita | Coenobita brevimanus | Coenobita cavipes |
| Coenobita variabilis | Coenobitidae | Coenomyiinae |
| Coenonympha | Coenonympha amaryllis | Coenonympha arcania |
| Coenonympha glycerion | Coenonympha hero | Coenonympha leander |
| Coenonympha mongolica | Coenonympha oedippus | Coenonympha pamphilus |
| Coenonympha saadi | Coenonympha symphita | Coenonympha tullia |
| Coenorrhinus pauxillus | Coenraad Jacob Temminck | Coenraad van Klenck |
| Coenzyme M | Coeranoscincus | Coereba |
| Coereba flaveola | Coerebidae | Coescoes |
| Coetomys damarensis | Coetzer | Coeur d'Alene, Idaho |
| Coeur de pirate | COEX | Coexist |
| Cof | COF2 | COFACE |
| Coface | Cofana | Cofana albida |
| Cofana eburnea | Cofana hoogstraali | Cofana jedarfa |
| Cofana lata | Cofana lineata | Cofana maai |
| Cofana medleri | Cofana perkinsi | Cofana polaris |
| Cofana separata | Cofana sotoi | Cofana spectra |
| Cofana unimaculata | Cofana yasumatsui | COFCO Group |
| COFDM | COFEE | Cofee |
| Cofergot | COFF | Coffea |
| Coffea arabica | Coffea canephora | Coffea charrieriana |
| Coffea liberica | Coffea robusta | Coffee |
| Coffee & Cigarettes | Coffee & TV | Coffee and Cigarettes II |
| Coffee and Cigarettes III | Coffee and Cigarettes, Memphis Version | Coffee and Cigarettes: Somewhere in California |
| Coffee Bean | Coffee County | Coffee County, Alabama |
| Coffee County, Georgia | Coffee County, Tennessee | Coffee Lake |
| Coffee Like | Coffee Shop | Coffee Stain Studios |
| CoffeeScript | Coffeeshop Company | Coffeikokkos |
| Coffey County, Kansas | Coffman | Cofidis |
| Cofidis (велокоманда) | Cofidis, Le Credit en Ligne | Cofidis, Solutions Crédits |
| COGAG | Coggeria | Coggeria naufragus |
| Cogita et visa | Cogitan | Cogitationum poenam nemo luit |
| Cogito | Cogito ergo sum | Cogito, ergo sum |
| Cogn. | Cognata vocabula rebus | Cognatio spiritualis |
| Cognitive Forms | Cognitive Passport | Cognitive Technologies |
| Cognos | Cognos Inc. | COGOG |
| CoH | Coheed and Cambria | Cohen Live: Leonard Cohen in Concert |
| Cohiba | Cohn | Cohors praetoria |
| Cohors quinquagenaria equitata | Cohors quinquagenaria peditata | Cohortes urbanae |
| Cohousing | Coicopihue | COIL |
| Coil | Coil (группа) | Coil - A Circle of Children |
| Coil Gun | Coil gun | Coilgun |
| CoilGun | Coilostylis | Coilotapalus peltata |
| COIN | Coincidencia oppositorum | Coincya wrightii |
| Coinmarketcap | COINTELPRO | Cointelpro |
| Cointreau | Cointreau (ликер) | Coitus interruptus |
| Coitus reservatus | Coix lacryma-jobi | Coke |
| Coke Andújar | Coke County, Texas | Coker |
| Cokin | COL8A2 | Cola |
| Cola (песня) | Cola acuminata | Cola le-testui |
| Cola letestui | Cola Song | Colaiuta, Vinnie |
| Colani | Colania | Colaphoptera |
| Colaphus | Colaphus apicalis | Colaphus hoefti |
| Colaphus joliveti | Colaphus palaestinus | Colaphus pulchellus |
| Colaphus sophiae | Colaphus tenuipes | Colaptes |
| Colaptes auratus | Colaptes fernandinae | Colaspidea |
