| cotta | surplice |
| cotta d'armi | shield |
| cotta di maglia | chain mail |
| cotta giovanile | puppy love |
| Cottbus | Cottbus |
| Cottidae | Cottidae |
| cottimo | piecework |
| cotto | boiled |
| Cotton Club | Cotton Club |
| cottura | baking |
| cottura a fuoco | firing |
| cottura alla griglia | grilling |
| cottura in stufato | braising |
| Cottus gobio | European bullhead |
| Cotunnite | Lead chloride |
| coturnato | buskined |
| Coturnix chinensis | Asian Blue Quail |
| Coturnix japonica | Japanese Quail |
| Coturno | Laced boot |
| Cotylorhynchus | Cotylorhynchus |
| Cotys I | Cotys I |
| CouchSurfing | CouchSurfing |
| Coudekerque-Branche | Coudekerque-Branche |
| Coudes | Coudes |
| Couesque | Couesque |
| Coufouleux | Coufouleux |
| Coulomb | Coulomb |
| Coulrofobia | Coulrophobia |
| Council on Foreign Relations | Council on Foreign Relations |
| Count Basie | Count Basie |
| Counter-Strike | Counter-Strike |
| Counties of Albania | Counties of Albania |
| Counting Down the Days | Counting Down the Days |
| Counting sort | Counting sort |
| country | country music |
| Country Blues | Country blues |
| Country Joe McDonald | Country Joe McDonald |
| Coupe CEMAC | CEMAC Cup |
| Coupe de la Ligue | Coupe de la Ligue |
| Couperin | Couperin |
| coupon | coupon |
| coupé | coupe |
| Coupé-Cabriolet | Retractable hardtop |
| Courbe | Curve |
| Courbevoie | Courbevoie |
| Courcelles-en-Bassée | Courcelles-en-Bassée |
| Courcelles-lès-Lens | Courcelles-lès-Lens |
| Courgenay | Courgenay |
| Courier Mail Server | Courier Mail Server |
| Courmayeur | Courmayeur |
| Courpignac | Courpignac |
| Courquetaine | Courquetaine |
| Courrières | Courrières |
| Coursan | Coursan |
| Court bouillon | Court-bouillon |
| Courtauld Gallery | Courtauld Institute of Art |
| Courtelary | Courtelary |
| Courteney Cox Arquette | Courteney Cox |
| Courtney Love | Courtney Love |
| Courtonne-les-Deux-Églises | Courtonne-les-Deux-Églises |
| Courtrai | Courtrai |
| Coutances | Coutances |
| Coutansouze | Coutansouze |
| Coux | Coux |
| COV | VOC |
| cova | brood |
| Cova-Lima | Cova-Lima |
| Covaccio | Nest |
| covalente | covalent |
| covalentemente | covalently |
| covare | hatch |
| covare sotto la cenere | smolder |
| covarianza | covariance |
| covata | covey |
| Covellite | Covellite |
| Covent Garden | Covent Garden |
| coventrizzare | coventrate |
| Coventry | Coventry |
| cover | cover version |
| Cover Flow | Cover Flow |
| Covilhã | Covilhã |
| Covington | Covington |
| covo | den |
| covone | stack |
| cow-boy | cowboy |
| cow-girl | cowhand |
| coxite | coxitis |
| Coxsackie virus | Coxsackie A virus |
| Coye-la-Forêt | Coye-la-Forêt |
| Coyolxauhqui | Coyolxauhqui |
| coyote | coyote |
| Cozy Powell | Cozy Powell |
| cozza | mussel |
