| Catholic Diocese of the Old Catholics in Germany | Iglesia Católica Antigua |
| Catholic Encyclopedia | Enciclopedia Católica |
| Catholic League | Santa Liga de París |
| Catholic marriage | Matrimonio |
| Catholic Monarchs | Reyes Católicos |
| Catholic order | Orden religiosa católica |
| Catholic sacraments | Sacramento |
| Catholic social teaching | Doctrina Social de la Iglesia |
| Catholic University of Eichstätt-Ingolstadt | Universidad Católica de Eichstaett-Ingolstadt |
| Catholic University of Leuven | Universidad Católica de Lovaina |
| Catholic University of Louvain | Universidad Católica de Lovaina |
| Catholicism | catolicismo |
| Catholicize | catolizar |
| Catholisism | Catolicismo |
| Cathy | Catalina |
| Cathy Berberian | Cathy Berberian |
| Cathy Freeman | Cathy Freeman |
| Cathédrale Saint-André de Bordeaux | Catedral de Burdeos |
| Cathédrale Saint-Jean-Baptiste de Lyon | Catedral Saint-Jean de Lyon |
| CATIA | CATIA |
| Catilina | Lucio Sergio Catilina |
| Catiline | Lucio Sergio Catilina |
| cation | catión |
| catkin | amento |
| catlike | felino |
| catnip | menta de gato |
| Cato | Catón el Viejo |
| Cato Institute | Cato Institute |
| Cato the Elder | Catón el Viejo |
| Cato the Younger | Catón el Joven |
| Catoblepas | Catoblepas |
| Catopsis | Catopsis |
| Catoptric system | Sistema catóptrico |
| Catopuma | Catopuma |
| Catregory | Especie |
| Catreus | Catreo |
| Catrina | La Catrina |
| Catscratch | Catscratch |
| catshark | pejegato |
| catsup | ketchup |
| Cattai National Park | Parque Nacional Cattai |
| cattail | espadaña |
| cattiness | rencor |
| cattle | ganado |
| cattle cake | forraje |
| Cattle dog | Boyero |
| Cattle Egret | Bubulcus ibis |
| cattleman | ganadero |
| Cattleya trianae | Cattleya trianae |
| catty | rencoroso |
| catty-corner | oblicuo |
