| Coś się dzieje | Kuch Kuch Hota Hai |
| CPAN | CPAN |
| CPGA | CPGA |
| CPL | Combined Programming Language |
| CPLD | Complex programmable logic device |
| CPP | C preprocessor |
| CPU | Central processing unit |
| CQD | CQD |
| Crack | Software cracking |
| Cracker | Cracker |
| Cracking | Cracker |
| Cracktro | Crack intro |
| Cradle of Filth | Cradle of Filth |
| Craig Armstrong | Craig Armstrong |
| Craig Bellamy | Craig Bellamy |
| Craig Jones | Craig Jones |
| Crailsheim | Crailsheim |
| Cranidos | Cranidos |
| Crans-près-Céligny | Crans-près-Céligny |
| Crash Bandicoot | Crash Bandicoot |
| Crashpad | Bouldering mat |
| Crassiers | Crassiers |
| Crassigyrinus | Crassigyrinus |
| Cravant | Cravant |
| Crawford | Crawford |
| Crawling | One Step Closer |
| Crazy For You | Crazy for You |
| Crazy Horse de Paris | Crazy Horse |
| CRB Maceió | Clube de Regatas Brasil |
| Cream the Rabbit | Cream the Rabbit |
| Creative Commons | Creative Commons |
| Creative Labs MuVo | Creative MuVo |
| Creative Labs Zen | Creative ZEN |
| Creative Technology | Creative Technology |
| Credit Suisse | Credit Suisse |
| Creediidae | Sandburrower |
| Creglingen | Creglingen |
| Creidhne | Creidhne |
| Creighton Abrams | Creighton Abrams |
| Creil | Creil |
| Cremaster | The Cremaster Cycle |
| Cremin | Cremin |
| Cremona | Cremona |
| Crenicichla | Crenicichla |
| Cres | Cres |
| Crescenzio Sepe | Crescenzio Cardinal Sepe |
| Cresciano | Cresciano |
| Creuse | Creuse |
| Creutzwald | Creutzwald |
| Crewe | Crewe |
| CRI | Color-rendering index |
| Cricetomys | Giant pouched rat |
| Criciúma EC | Criciúma Esporte Clube |
| Cricov | Cricovul Dulce River |
| Cricova | Cricova |
| Cricquebœuf | Cricquebœuf |
| Crikvenica | Crikvenica |
| Crillon | Louis des Balbes de Berton de Crillon |
| Crimea Medal | Crimea Medal |
| Criollo | Crioulo |
| Crip Walk | Crip Walk |
| Crips | Crips |
| Cris | Cristiano Marques Gomes |
| Crispin Glover | Crispin Glover |
| Criss Angel | Criss Angel |
| Crissier | Crissier |
| Cristian Brocchi | Cristian Brocchi |
| Cristian Chivu | Cristian Chivu |
| Cristian Daniel Ledesma | Cristian Daniel Ledesma |
| Cristian Mijares | Cristian Mijares |
| Cristian Mungiu | Cristian Mungiu |
| Cristian Rodríguez | Cristian Rodríguez |
| Cristian Zaccardo | Cristian Zaccardo |
| Cristiano Lucarelli | Cristiano Lucarelli |
| Cristiano Ronaldo | Cristiano Ronaldo |
| Cristina Fernández de Kirchner | Cristina Fernández de Kirchner |
| Cristina Scabbia | Cristina Scabbia |
| Cristián Zapata | Cristián Zapata |
| Cristuru Secuiesc | Cristuru Secuiesc |
| Cristóbal Colón | Pico Cristóbal Colón |
| Cristóbal de Morales | Cristóbal de Morales |
| Critérium du Dauphiné Libéré | Critérium du Dauphiné Libéré |
| Critérium International | Critérium International |
| Cro-Mags | Cro-Mags |
| Croatia Airlines | Croatia Airlines |
| Crocodylus | Crocodylus |
| Croglio | Croglio |
| Croissant | Croissant |
| Croix | Cross |
| Croix-de-feu | Croix-de-Feu |
| Croix-en-Ternois | Croix-en-Ternois |
| Cronay | Cronay |
| Crontab | Crontab |
| Cross | Cross |
| Cross River | Cross River State |
| Cross-site request forgery | Cross-site request forgery |
| Cross-site scripting | Cross-site scripting |
| Crossdressing | Cross-dressing |
| CrossFire | ATI CrossFire |
| Crossgolf | Urban golf |
| Crossing-over | Chromosomal crossover |
| Crossover thrash | Punk metal |
| Crosspost | Crossposting |
| Crotale | Crotale missile |
| Crotalus | Crotalus |
| Crotone | Crotone |
| Crotram | CROTRAM |
| Crowning of Atlantis | Crowning of Atlantis |
| Croy | Croy |
| Croydon | London Borough of Croydon |
| Crozes-Hermitage | Crozez-Hermitage AOC |
| Crufts | Crufts |
| Cruiser Mk I | Cruiser Mk I |
| Cruiser Mk II | Cruiser Mk II |
| Cruiser Mk III | Cruiser Mk III |
| Cruiser Mk IV | Cruiser Mk IV |
| Crusoe | Crusoe |
| Crust punk | Crust punk |
| Cruz Azul Meksyk | Club Deportivo Social y Cultural Cruz Azul |
| Cruz Hernández | Cruz Hernández |
| Cruzado | Brazilian cruzado |
| Cruzeiro Esporte Clube | Cruzeiro Esporte Clube |
| Crvena Zvezda Belgrad | FC Red Star Belgrade |
| Crvenka | Crvenka |
| Crwth | Crwth |
| Cry Freedom | Cry Freedom |
| Cryobot | Cryobot |
| Cryptobranchoidea | Cryptobranchoidea |
| Cryptosporidium | Cryptosporidium |
| Crystal | Crystal |
| Crystal Reports | Crystal Reports |
| Crystal Ship | The Crystal Ship |
| Crytek | Crytek |
| Crème de cassis | Crème de cassis |
| Crèvecœur-en-Auge | Crèvecœur-en-Auge |
| Crèvecœur-en-Brie | Crèvecœur-en-Brie |
| Crédit Agricole | Crédit Agricole |
| Créquy | Créquy family |
| Crésuz | Crésuz |
| Créteil | Créteil |
| Cs | CS |
| CS Sedan | CS Sedan Ardennes |
| CSA Maceió | Centro Sportivo Alagoano |
| Csabacsűd | Csabacsüd |
| csc | cosec |
| CSD | Circuit Switched Data |
| Csepel | Csepel Island |
| Csh | C shell |
| CSKA Moskwa | PFC CSKA Moscow |
| CSKA Sofia | PFC CSKA Sofia |
| CSpace | CSpace |
| CSS | CSS Programming |
| CSV | Comma-separated values |
| CTCP | Client-To-Client Protocol |
| CtF | Computer to film |
| ctg | cot |
| Cthulhu | Cthulhu |
| CtP | Computer to plate |
| CTVT | Canine transmissible venereal tumor |
| Cuarnens | Cuarnens |
| Cuarny | Cuarny |
| Cuatro Torres Business Area | CTBA |
| Cuauhtemoc | Cuauhtémoc |
| Cuba | Cuba |
| Cuba Libre | Cuba Libre |
| Cube | Cube |
| Cubewano | Classical Kuiper belt object |
| Cubiculum | Chamber |
| cuchnący | fetid |
| cuchnąć | stink |
| Cuchulainn | Setanta |
| Cucq | Cucq |
| cud | wonder |
| Cud domu brandenburskiego | The miracle of the House of Brandenburg |
| Cud eucharystyczny | Eucharistic miracle |
| Cud w Lake Placid | Miracle |
| Cuda | Thaumaturgical Spells |
| cudaczny | bizarre |
| Cudot | Cudot |
| cudowne dziecko | child prodigy |
| Cudowne lata | The Wonder Years |
| Cudowni chłopcy | Wonder Boys |
| cudownie | wonderfully |
| cudowny | wonderful |
| Cudowny mandaryn | The Miraculous Mandarin |
| cudowronka | bird of paradise |
| Cudowronki | Birds of Paradise |
| Cudrefin | Cudrefin |
| cudzoziemiec | foreigner |
| cudzoziemka | foreigner |
| cudzoziemski | foreign |
| cudzołożnica | adulterer |
| cudzołożnik | adulterer |
| cudzołożny | adulterous |
| Cudzołożyć | Commit adultery |
| Cudzożywność | Heterotroph |
| cudzy | somebody else's |
| cudzysłów | quotation mark(s) |
| Cuernavaca | Cuernavaca |
| Cuffy | Cuffy |
| Cugir | Cugir |
| Cugnasco | Cugnasco |
| Cugy | Cugy |
| Cuiabá | Cuiabá |
| Cuitláhuac | Cuitláhuac |
| Cujo | Cujo |
| cukier | carbohydrate |
| Cukier cynamonowy | Cinnamon sugar |
| Cukier inwertowany | Inverted sugar syrup |
| Cukier jadalny | Sugar |
| Cukier palmowy | Palm sugar |
| cukier puder | icing sugar |
| Cukier spożywczy | Sugar |
| cukier trzcinowy | cane sugar |
| cukierek | sweet |
| Cukierki Odra Brzeg | KS Cukierki Odra Brzeg |
| cukiernia | confectionery |
| cukiernica | sugar bowl |
| cukiernik | confectioner |
| cukinia | zucchini |
| cukrownia | sugar plant |
| cukrowy | sugary |
| Cukroza | Sucrose |
| Cukry proste | Sugar |
| cukrzyca | diabetes |
