| cotización | quote |
| cotización de cierre | closing price |
| cotización de conversión de divisas | conversion rate |
| cotizar | quote |
| coto | preserve |
| Coto Mixto | Couto Mixto |
| coto pesquero | fishing preserve |
| Cotobad | Cotobade |
| cotonete | cotton swab |
| Cotonú | Cotonou |
| Cotopaxi | Cotopaxi Province |
| cotorra | parrot |
| Cotorra de Alexandra | Princess Parrot |
| cotorra rizada | lovebird |
| cottage | cottage cheese |
| Cottbus | Cottbus |
| Cottens | Cottens |
| Coturnix | Coturnix |
| Coturnix novaezelandiae | New Zealand Quail |
| cotuza | agouti |
| Cotylosauria | Captorhinidae |
| CouchSurfing | CouchSurfing |
| coulomb | coulomb |
| coulometría | coulometry |
| Coulrofobia | Coulrophobia |
| Count Basie | Count Basie |
| Counter-Strike | Counter-Strike |
| Counting sort | Counting sort |
| country | country music |
| Couperin | Couperin |
| Courbevoie | Courbevoie |
| Courtauld Institute of Art | Courtauld Institute of Art |
| Courtelary | Courtelary |
| Courteney Cox | Courteney Cox |
| Courtney Love | Courtney Love |
| Coutances | Coutances |
| Cova-Lima | Cova-Lima |
| covalente | covalent |
| covariación | covariance |
| Covariancia de Lorentz | Lorentz covariance |
| Covasna | Covasna County |
| Covector | One-form |
| Covenanter | Covenanter |
| Coventry | Coventry |
| Covilhã | Covilhã |
| Covivienda | Cohousing |
| Cowboy de ciudad | Urban Cowboy |
| Cowboy de Medianoche | Midnight Cowboy |
| CowParade | CowParade |
| Cowpunk | Cowpunk |
| coxis | coccyx |
| Coxsackie virus | Coxsackie A virus |
| Coxsackievirus | Coxsackie A virus |
| Coxsone Dodd | Coxsone Dodd |
| Coyhaique | Coyhaique |
| Coyoacán | Coyoacán |
| Coyolxauhqui | Coyolxauhqui |
| Coyopa | List of Maya gods and supernatural beings |
| coyote | coyote |
| Coyote Linux | Coyote Linux |
| Coyote Ugly | Coyote Ugly |
| coyuntura | joint |
| coyuyo | cicada |
| coágulo | clot |
| Coímbra | Coimbra |
| Coín | Angle |
| coñac | brandy |
