| cotización | estimativa |
| cotización de cierre | cotação de fechamento |
| cotización de conversión de divisas | taxa de câmbio |
| cotizar | cobrar |
| coto | reserva |
| Coto Mixto | Couto Misto |
| coto pesquero | áreas de pesca protegidas |
| Cotobad | Cotobade |
| Cotoneaster | Cotoneaster |
| cotonete | cotonete |
| Cotonú | Cotonou |
| Cotopaxi | Cotopaxi |
| cotorra | papagaio |
| cotorra rizada | periquito |
| cotorrear | bater papo |
| cotorreo | falatório |
| cototo | galo |
| cottage | requeijão |
| Cottbus | Cottbus |
| Cottens | Cottens |
| Coturnicops exquisitus | Coturnicops exquisitus |
| cotuza | cutia |
| CouchSurfing | CouchSurfing |
| coulomb | coulomb |
| Coulrofobia | Coulrofobia |
| Count Basie | Count Basie |
| Counter-Strike | Counter-Strike |
| Counting sort | Counting sort |
| country | música country |
| Couperin | Couperin |
| Courteney Cox | Courteney Cox |
| Courtney Love | Courtney Love |
| Courtoin | Courtoin |
| Courtois-sur-Yonne | Courtois-sur-Yonne |
| Coutances | Coutances |
| Cova-Lima | Cova-Lima |
| Covada | Couvade |
| covariación | covariância |
| Covasna | Covasna |
| Coventry | Coventry |
| Covilhã | Covilhã |
| Cowboy | Cowboy |
| Cowboy de Medianoche | Midnight Cowboy |
| CowParade | CowParade |
| Cowpunk | Country punk |
| Cox | Cox |
| coxis | cóccix |
| Coyhaique | Coihaique |
| Coyolxauhqui | Coyolxauhqui |
| coyote | coiote |
| Coyote Ugly | Coyote Bar |
| coyuntura | crise |
| coyuyo | cigarra |
| Cozumel | Cozumel |
| coágulo | coágulo |
| Coímbra | Coimbra |
| Coín | Coín |
| coñac | brande |
| coño | vulva |
| CP | CP |
| CPAN | CPAN |
| CPRM | Content Protection for Recordable Media |
| CPU | Unidade Central de Processamento |
| Cra | Crash |
| Cracidae | Cracidae |
| crack | crack |
| Cracker | Cracker |
| Cracking | Craqueamento |
| Cracovia | Cracóvia |
| Cradle of Filth | Cradle of Filth |
| Craig Bellamy | Craig Bellamy |
| Craig Jones | Craig Jones |
| Crailsheim | Crailsheim |
| Craiova | Craiova |
| Crambe | Crambe |
| crampón | mosquetão |
| craneal | craniano |
| craneano | craniano |
| Craniata | Craniata |
| Cranidos | Zugaidos |
| Crans-près-Céligny | Crans-près-Céligny |
| Crash Bandicoot | Crash Bandicoot |
| craso | crasso |
