| Cossato | Cossignano | Cossogno |
| Cossoine | Cossombrato | Costa de' Nobili |
| Costa di Mezzate | Costa di Rovigo | Costa di Serina |
| Costa Masnaga | Costa Mesa, California | Costa Rica |
| Costa Rican | Costa Serina | Costa Valle Imagna |
| Costa Vescovato | Costa Volpino | Costabissara |
| Costacciaro | Costanza / Costanzo | Costanzana |
| Costermano | Costigliole d'Asti | Costigliole Saluzzo |
| Costume | Cota, Colombia | Cotabato |
| Cotabato (lalawigan) | Cotabato City | Cotabato City, Maguindanao |
| Cotabato Foundation College of Science and Technology | Cotabato province | Cotati, California |
| Cote d'Ivoire | Cote d’Ivoire | Cotignola |
| Cotinga | Cotingas | Cotingidae |
| Cotorra | Cotorra (Córdoba) | Cotronei |
| Cottage | Cottanello | Cotton |
| Cotton (paglilinaw) | Cotton Mather | Cotton tree |
| Cotton wool | Coturnix coturnix | Couch dance |
| Cougar | Cougar (salitang balbal) | Cough |
| Cough of 100 days | Cough of one hundred days | Cougher |
| Coughing | Council in Trullo | Council of Chalcedon |
| Council of Constance | Council of Ephesus | Council of Jerusalem |
| Council of Trent | Count | Count of Monte Cristo |
| Counter strike | Counter-reform | Counter-Reformation |
| Counter-Strike | Countess | Counti |
| Counties | Counting Crows | Country |
| Country & western music | Country (musika) | Country (paglilinaw) |
| Country (rural) | Country and western music | Country code top-level domain |
| Country music | Country-code top-level domain | Country-code top-level domains |
| Countryside | County | County ng El Dorado |
| County ng El Dorado, Kaliporniya | County ng Inyo, Kaliporniya | County ng Queens |
| County of Edessa | County of Stockholm | County of Tripoli |
| Coup d'état | Coup de fouet | Couple of Fantasy |
| Couple or Trouble | Couples for christ | Couples for Christ |
| Couplet | Couque de Dinant | Courage |
| Courageous | Courant | Courier |
| Courier (estilo ng titik) | Courmangoux | Courmayeur |
| Course book | Course stone | Course-book |
| Coursebook | Court | Court (law) |
| Courteney Cox | Courtes | Courtesan |
| Courting | Courtney Barnett | Courtney Love |
| Courtney Thorne-Smith | Courtship | Couscous |
| Cousin | Cousins | Couve |
| Couve-galega | Couwnti | Covarachía |
| COVAX | Covaxin | Coveñas |
| Covenant | Covent Garden | Coventry |
| Coventry Carol | COVID-19 | COVID-19 sa Asya |
| COVID-19 sa Bangsamoro | COVID-19 sa Calabarzon | COVID-19 sa Caraga |
| COVID-19 sa Europa | COVID-19 sa Gitnang Bisayas | COVID-19 sa Hilagang Mindanao |
| COVID-19 sa Kabikulan | COVID-19 sa Kalakhang Maynila | COVID-19 sa Kanlurang Bisayas |
| COVID-19 sa Lambak ng Cagayan | COVID-19 sa Mimaropa | COVID-19 sa Pilipinas |
| COVID-19 sa Rehiyon ng Bicol | COVID-19 sa Rehiyon ng Davao | COVID-19 sa Rehiyon ng Ilocos |
| COVID-19 sa Rehiyong Pampangasiwaan ng Cordillera | COVID-19 sa Silangang Bisayas | COVID-19 sa Tangway ng Zamboanga |
| Covina, California | Covo | Cow |
| Cow pea | Cow-pea | Cowboy |
| Cowboy position | Cowboy sex position | Cowgirl |
| Cowgirl position | Cowgirl sex position | Cownti |
| Cowpea | Cowpox | Cows |
| Coxinga | Coyaima | Coyote |
| Coyotl | Coypel le Poussin | CozyCot |
| Cozzie | Cozzo | CPN |
| CPN (UM) | CPN (UML) | CPN(UM) |
| CPN(UML) | CPU | CPU slot |
| CPU socket | CQUniversity | Crab |
| Crab apple | Crab egg | Crab eggs |
| Crab fat | Crab lice | Crab louse |
| Crabapple | Crabgrass | Crabs |
| Cracker | Cracker Barrel | Crackling |
| Cracklings | Craco | Cracovia |
| Craftsman Truck Series | Craig Phillips | Craig Taro Gold |
| Cramp | Cran-berries | Cran-berry |
| Cranberries | Cranberry | Crandola Valsassina |
| Crane | Crane (bird) | Craneo |
| Craneum | Cranium | Crans, Ain |
| CrAO | Cras-sur-Reyssouze | Crash Landing on You |
| Cravagliana | Cravalle | Cravalle fish |
| Cravalle fish species | Cravalle species | Cravanzana |
| Craveggia | Cravo Norte | Craw fish |
| Craw-fish | Crawfish | Crawfish eggs |
| Crawford Long | Crawford W. Long | Crawford Williamson |
| Crawford Williamson Long | Cray | Cray fish |
| Cray-fish | Crayfish | Crayfish eggs |
| Crayon | Crazy | Crazy Beat |
| Crazy Beautiful You | Crazy Taxi | Crème |
| Crème brûlée | Crêpe | Crô-Magnon |
| CRC | Cream | Creampie |
| Creamy | Create | Created |
| Creating | Creation | Creation myth |
| Creation story | Creationism | Creationist |
| Creative | Creative Commons | Creative writing |
| Creativity | Creature | Creazzo |
| Crecchio | Credaro | Credence |
| Credential | Credentials | Credit union |
| Credit unions | Credits and debits | Creeper |
| Creepers | Crema catalana | Crema de Mangga |
| Crema, Italya | Crema, Lombardia | Creme |
| Creme brulee | Creme de menthe | Cremella |
| Cremenaga | Cremeno | Cremia |
| Cremolino | Cremona | Crenshaw |
| Crenshaw melon | Crepitation | Crepitus |
| Crescent | Crescent City, California | Crescentino |
